Chicago, IL CHI to Denver, CO DEN flight with United

Sat 28 Mar
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Journey information

Overview: Chicago, IL to Denver, CO flight

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Icon of flight

Flights from Chicago, IL to Denver, CO depart on average 55 times per day, taking around 3h 13m. Cheap flight tickets for this journey start at £24 if you book in advance.

There are 10 flights per day. The earliest flight runs at 00:01, the last at 23:58. The fastest flight covers the 1475 km distance in 2h 45m. June is the cheapest month to fly.

Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Distance
1475 km
Average flight duration
3h 13m
Cheapest ticket price
£24
Flights per day
55
Direct flights
10
Fastest flight
2h 45m
Cheapest month to travel
June
First flight
00:01
Last flight
23:58
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information

The cheapest and fastest flights from Chicago, IL to Denver, CO

Showing times and prices for 28 Mar

Cheapest price

£190

Average price

£646

Fastest journey

2 h 52 m

Average duration

2 h 53 m

Flights per day

96

Distance

1475 km

Cheap tickets

The best way to find a cheap flight ticket from Chicago, IL to Denver, CO is to book your journey as far in advance as possible and to avoid travelling at rush hour.

The average ticket from Chicago, IL to Denver, CO will cost around £646 if you buy it on the day, but you can find cheap flight tickets today for only £190.

Fast flights

Of the 96 flights that leave Chicago, IL for Denver, CO every day 14 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

These direct flights cover the 1475 km distance in an average of 2 h 53 m but if you time it right, some flights will get you there in just 2 h 52 m .

The slowest flights will take 2 h 55 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.

  • Frontier AirlinesF92198 · F93599
    16:517h13
    O'Hare International Airport
    23:04Denver International Airport
    £1901One-way
    1 change
  • Frontier AirlinesF93647 · F91994
    20:558h01
    O'Hare International Airport
    03:56Denver International Airport
    £1901One-way
    1 change
  • Frontier AirlinesF91416 · F91113
    16:3016h48
    O'Hare International Airport
    08:18Denver International Airport
    £1951One-way
    1 change
  • Frontier AirlinesF93647 · F92350
    20:5513h06
    O'Hare International Airport
    09:01Denver International Airport
    £1951One-way
    1 change
  • Frontier AirlinesF93647 · F94612
    20:5528h14
    O'Hare International Airport
    00:09Denver International Airport
    £2471One-way
    1 change

Travel Information

Compare train, coach and flight for Chicago, IL to Denver, CO

Omio recommends booking the train as it is the most popular option from Chicago, IL to Denver, CO among Omio's users. If you are prioritising price take the coach with prices starting from £51. For those with little time consider booking a flight which can get you there in 3h 13m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.4 - 1.3kg. The ticket price range depends on the travel mode: a coach costs an average of £51, and a flight costs an average of £24.

Distance: 1475 km

Compare flight with

Flight
Most popular
Train
Coach

£181

Average Price

£174

Average Price

£119

Average Price

Cheapest

6h 13m

Average total duration

Fastest

3h 13m

Onboard

+

3h 0m

Additional time*

19h 18m

Average total duration

18h 48m

Onboard

+

30m

Additional time*

22h 42m

Average total duration

22h 12m

Onboard

+

30m

Additional time*

4.4 - 8.8kg

CO2 emissions

0.4 - 1.3kg

CO2 emissions

Lowest

1.5 - 3.7kg

CO2 emissions

United

Most popular airline

Amtrak

Most popular train company

Greyhound

Most popular bus company

Direct Options

Direct Options

Direct Options

Additional time: Average total travel duration to departure point, security checks and transfers.

Live departures

Chicago, IL to Denver, CO flight times

The table below shows live departures for Chicago, IL to Denver, CO flights for tomorrow, Friday 27 March. You can also manually refresh the results below to see updated flight journeys.

Last updated at
ProviderDepartsDurationArrivesChanges
Tickets
alaska_airlinesAS321 · AS3281 · AS134600:24 O'Hare International Airport
24h04
00:28 Denver International Airport2 changes
alaska_airlinesAS321 · AS64200:24 O'Hare International Airport
29h32
05:56 Denver International Airport1 change
alaska_airlinesAS321 · AS384 · AS21900:24 O'Hare International Airport
29h20
05:44 Denver International Airport2 changes
alaska_airlinesAS321 · AS190 · AS21900:24 O'Hare International Airport
29h20
05:44 Denver International Airport2 changes
alaska_airlinesAS321 · AS2047 · AS134600:24 O'Hare International Airport
24h04
00:28 Denver International Airport2 changes
alaska_airlinesAS321 · AS141300:24 O'Hare International Airport
22h43
23:07 Denver International Airport1 change
alaska_airlinesAS321 · AS2264 · AS134600:24 O'Hare International Airport
24h04
00:28 Denver International Airport2 changes
alaska_airlinesAS321 · AS190 · AS142900:24 O'Hare International Airport
23h00
23:24 Denver International Airport2 changes
alaska_airlinesAS321 · AS697 · AS21900:24 O'Hare International Airport
29h20
05:44 Denver International Airport2 changes
alaska_airlinesAS321 · AS650 · AS21900:24 O'Hare International Airport
29h20
05:44 Denver International Airport2 changes
alaska_airlinesAS321 · AS68200:24 O'Hare International Airport
16h27
16:51 Denver International Airport1 change
alaska_airlinesAS321 · AS498 · AS134600:24 O'Hare International Airport
24h04
00:28 Denver International Airport2 changes
frontier_airlinesF92445 · F9315600:39 O'Hare International Airport
15h05
15:44 Denver International Airport1 change
unitedUA1301 · UA535500:40 O'Hare International Airport
12h14
12:54 Denver International Airport1 change
unitedUA5290 · UA178200:40 O'Hare International Airport
13h35
14:15 Denver International Airport1 change
unitedUA5290 · UA592400:40 O'Hare International Airport
12h25
13:05 Denver International Airport1 change
unitedUA2499 · UA133900:40 O'Hare International Airport
13h41
14:21 Denver International Airport1 change
unitedUA312 · UA36100:45 O'Hare International Airport
12h07
12:52 Denver International Airport1 change
unitedUA759 · UA67000:46 O'Hare International Airport
13h52
14:38 Denver International Airport1 change
unitedUA1710 · UA123200:55 O'Hare International Airport
13h42
14:37 Denver International Airport1 change
unitedUA1710 · UA568300:55 O'Hare International Airport
12h10
13:05 Denver International Airport1 change
unitedUA76700:57 O'Hare International Airport
2h58
03:55 Denver International Airport0 changesdirect
unitedUA684 · UA562000:58 O'Hare International Airport
11h57
12:55 Denver International Airport1 change
alaska_airlinesAS1466 · AS576 · AS134600:59 O'Hare International Airport
23h29
00:28 Denver International Airport2 changes
alaska_airlinesAS1466 · AS1358 · AS64200:59 O'Hare International Airport
28h57
05:56 Denver International Airport2 changes
alaska_airlinesAS1466 · AS1309 · AS141300:59 O'Hare International Airport
22h08
23:07 Denver International Airport2 changes
alaska_airlinesAS1466 · AS1456 · AS64200:59 O'Hare International Airport
28h57
05:56 Denver International Airport2 changes
alaska_airlinesAS1466 · AS149200:59 O'Hare International Airport
17h21
18:20 Denver International Airport1 change
alaska_airlinesAS1466 · AS1309 · AS64200:59 O'Hare International Airport
28h57
05:56 Denver International Airport2 changes
alaska_airlinesAS1466 · AS399 · AS134600:59 O'Hare International Airport
23h29
00:28 Denver International Airport2 changes
alaska_airlinesAS1466 · AS21900:59 O'Hare International Airport
28h45
05:44 Denver International Airport1 change
alaska_airlinesAS1466 · AS622 · AS64200:59 O'Hare International Airport
28h57
05:56 Denver International Airport2 changes
alaska_airlinesAS1466 · AS142900:59 O'Hare International Airport
22h25
23:24 Denver International Airport1 change
unitedUA1394 · UA285301:03 O'Hare International Airport
15h10
16:13 Denver International Airport1 change
unitedUA1394 · UA231601:03 O'Hare International Airport
12h02
13:05 Denver International Airport1 change
unitedUA602 · UA33701:10 O'Hare International Airport
13h43
14:53 Denver International Airport1 change
unitedUA1842 · UA274201:10 O'Hare International Airport
14h55
16:05 Denver International Airport1 change
unitedUA1842 · UA570101:10 O'Hare International Airport
11h47
12:57 Denver International Airport1 change
unitedUA2097 · UA39801:10 O'Hare International Airport
15h06
16:16 Denver International Airport1 change
unitedUA2426 · UA187401:10 O'Hare International Airport
11h30
12:40 Denver International Airport1 change
unitedUA457 · UA144201:10 O'Hare International Airport
11h42
12:52 Denver International Airport1 change
unitedUA1069 · UA203101:15 O'Hare International Airport
14h46
16:01 Denver International Airport1 change
unitedUA1069 · UA35501:15 O'Hare International Airport
11h47
13:02 Denver International Airport1 change
unitedUA4596 · UA139601:28 O'Hare International Airport
15h08
16:36 Denver International Airport1 change
american_airlinesAA138701:45 O'Hare International Airport
2h52
04:37 Denver International Airport0 changesdirect
frontier_airlinesF93647 · F9176601:55 O'Hare International Airport
23h59
01:54 Denver International Airport1 change
frontier_airlinesF93647 · F9235001:55 O'Hare International Airport
13h06
15:01 Denver International Airport1 change
frontier_airlinesF93647 · F9199401:55 O'Hare International Airport
8h01
09:56 Denver International Airport1 change
unitedUA661 · UA133902:15 O'Hare International Airport
12h06
14:21 Denver International Airport1 change
unitedUA5253 · UA171602:15 O'Hare International Airport
12h52
15:07 Denver International Airport1 change
unitedUA661 · UA70302:15 O'Hare International Airport
14h12
16:27 Denver International Airport1 change
unitedUA134202:39 O'Hare International Airport
2h51
05:30 Denver International Airport0 changesdirect
frontier_airlinesF93135 · F9485510:20 O'Hare International Airport
20h18
06:38 Denver International Airport1 change
frontier_airlinesF93135 · F9322910:20 O'Hare International Airport
28h06
14:26 Denver International Airport1 change
frontier_airlinesF91596 · F9329310:30 O'Hare International Airport
12h30
23:00 Denver International Airport1 change
unitedUA669 · UA64511:00 O'Hare International Airport
9h20
20:20 Denver International Airport1 change
envoy_airAA354511:50 O'Hare International Airport
2h57
14:47 Denver International Airport0 changesdirect
unitedUA2032 · UA77912:00 O'Hare International Airport
6h40
18:40 Denver International Airport1 change
unitedUA211812:00 O'Hare International Airport
2h54
14:54 Denver International Airport0 changesdirect
unitedUA5468 · UA46412:05 O'Hare International Airport
6h23
18:28 Denver International Airport1 change
unitedUA2326 · UA64512:21 O'Hare International Airport
7h59
20:20 Denver International Airport1 change
frontier_airlinesF91827 · F9210612:55 O'Hare International Airport
8h51
21:46 Denver International Airport1 change
frontier_airlinesF91827 · F9174812:55 O'Hare International Airport
11h10
00:05 Denver International Airport1 change
unitedUA2092 · UA220013:00 O'Hare International Airport
7h50
20:50 Denver International Airport1 change
alaska_airlinesAS1470 · AS21913:20 O'Hare International Airport
16h24
05:44 Denver International Airport1 change
alaska_airlinesAS1470 · AS149213:20 O'Hare International Airport
29h00
18:20 Denver International Airport1 change
alaska_airlinesAS1470 · AS142913:20 O'Hare International Airport
10h04
23:24 Denver International Airport1 change
alaska_airlinesAS1470 · AS1456 · AS64213:20 O'Hare International Airport
16h36
05:56 Denver International Airport2 changes
alaska_airlinesAS1470 · AS622 · AS64213:20 O'Hare International Airport
16h36
05:56 Denver International Airport2 changes
unitedUA104913:40 O'Hare International Airport
2h53
16:33 Denver International Airport0 changesdirect
unitedUA5444 · UA122013:45 O'Hare International Airport
7h10
20:55 Denver International Airport1 change
unitedUA1972 · UA472014:00 O'Hare International Airport
6h15
20:15 Denver International Airport1 change
unitedUA1972 · UA166214:00 O'Hare International Airport
8h13
22:13 Denver International Airport1 change
frontier_airlinesF92792 · F9331114:30 O'Hare International Airport
14h39
05:09 Denver International Airport1 change
frontier_airlinesF92792 · F9173314:30 O'Hare International Airport
23h50
14:20 Denver International Airport1 change
frontier_airlinesF92792 · F9251914:30 O'Hare International Airport
8h08
22:38 Denver International Airport1 change
envoy_airAA354114:46 O'Hare International Airport
2h57
17:43 Denver International Airport0 changesdirect
unitedUA4725 · UA191015:30 O'Hare International Airport
8h19
23:49 Denver International Airport1 change
unitedUA2605 · UA23515:35 O'Hare International Airport
8h34
00:09 Denver International Airport1 change
unitedUA1140 · UA521415:35 O'Hare International Airport
4h53
20:28 Denver International Airport1 change
unitedUA180315:48 O'Hare International Airport
2h57
18:45 Denver International Airport0 changesdirect
unitedUA704 · UA166215:52 O'Hare International Airport
6h21
22:13 Denver International Airport1 change
unitedUA1061 · UA244715:53 O'Hare International Airport
8h26
00:19 Denver International Airport1 change
unitedUA1377 · UA201216:05 O'Hare International Airport
8h16
00:21 Denver International Airport1 change
unitedUA2629 · UA177016:05 O'Hare International Airport
9h30
01:35 Denver International Airport1 change
unitedUA2629 · UA172916:05 O'Hare International Airport
7h45
23:50 Denver International Airport1 change
unitedUA2182 · UA209316:20 O'Hare International Airport
7h40
00:00 Denver International Airport1 change
unitedUA5234 · UA160216:30 O'Hare International Airport
7h31
00:01 Denver International Airport1 change
unitedUA247 · UA194317:43 O'Hare International Airport
6h33
00:16 Denver International Airport1 change
unitedUA3493 · UA212317:44 O'Hare International Airport
6h41
00:25 Denver International Airport1 change
unitedUA467 · UA227217:45 O'Hare International Airport
6h31
00:16 Denver International Airport1 change
unitedUA623 · UA192417:50 O'Hare International Airport
11h24
05:14 Denver International Airport1 change
unitedUA111317:50 O'Hare International Airport
2h58
20:48 Denver International Airport0 changesdirect
unitedUA3476 · UA191017:55 O'Hare International Airport
5h54
23:49 Denver International Airport1 change
unitedUA2290 · UA265517:57 O'Hare International Airport
6h16
00:13 Denver International Airport1 change
unitedUA2189 · UA177018:00 O'Hare International Airport
7h35
01:35 Denver International Airport1 change
unitedUA2138 · UA530818:00 O'Hare International Airport
6h25
00:25 Denver International Airport1 change
unitedUA622 · UA244718:05 O'Hare International Airport
6h14
00:19 Denver International Airport1 change
unitedUA5933 · UA160218:05 O'Hare International Airport
5h56
00:01 Denver International Airport1 change
unitedUA1617 · UA191018:55 O'Hare International Airport
4h54
23:49 Denver International Airport1 change
unitedUA27019:01 O'Hare International Airport
2h55
21:56 Denver International Airport0 changesdirect
alaska_airlinesAS325 · AS2190 · AS68219:09 O'Hare International Airport
21h42
16:51 Denver International Airport2 changes
alaska_airlinesAS325 · AS2024 · AS68219:09 O'Hare International Airport
21h42
16:51 Denver International Airport2 changes
alaska_airlinesAS325 · AS724 · AS149219:09 O'Hare International Airport
23h11
18:20 Denver International Airport2 changes
alaska_airlinesAS325 · AS721 · AS149219:09 O'Hare International Airport
23h11
18:20 Denver International Airport2 changes
alaska_airlinesAS325 · AS667 · AS149219:09 O'Hare International Airport
23h11
18:20 Denver International Airport2 changes
alaska_airlinesAS325 · AS134619:09 O'Hare International Airport
29h19
00:28 Denver International Airport1 change
unitedUA2298 · UA227219:15 O'Hare International Airport
5h01
00:16 Denver International Airport1 change
unitedUA234719:45 O'Hare International Airport
2h56
22:41 Denver International Airport0 changesdirect
frontier_airlinesF91829 · F9182019:55 O'Hare International Airport
10h23
06:18 Denver International Airport1 change
frontier_airlinesF91829 · F9214219:55 O'Hare International Airport
7h45
03:40 Denver International Airport1 change
alaska_airlinesAS407 · AS141320:22 O'Hare International Airport
26h45
23:07 Denver International Airport1 change
alaska_airlinesAS407 · AS64220:22 O'Hare International Airport
9h34
05:56 Denver International Airport1 change
alaska_airlinesAS407 · AS68220:22 O'Hare International Airport
20h29
16:51 Denver International Airport1 change
unitedUA5094 · UA606820:50 O'Hare International Airport
4h34
01:24 Denver International Airport1 change
unitedUA5103 · UA511120:50 O'Hare International Airport
4h45
01:35 Denver International Airport1 change
unitedUA264921:08 O'Hare International Airport
2h58
00:06 Denver International Airport0 changesdirect
alaska_airlinesAS1447 · AS142921:10 O'Hare International Airport
26h14
23:24 Denver International Airport1 change
alaska_airlinesAS1447 · AS149221:10 O'Hare International Airport
21h10
18:20 Denver International Airport1 change
unitedUA2618 · UA192421:10 O'Hare International Airport
8h04
05:14 Denver International Airport1 change
alaska_airlinesAS1447 · AS21921:10 O'Hare International Airport
8h34
05:44 Denver International Airport1 change
frontier_airlinesF93044 · F9491921:18 O'Hare International Airport
25h20
22:38 Denver International Airport1 change
frontier_airlinesF93044 · F9173321:18 O'Hare International Airport
17h02
14:20 Denver International Airport1 change
frontier_airlinesF93044 · F9251921:18 O'Hare International Airport
23h23
20:41 Denver International Airport1 change
frontier_airlinesF91416 · F9111321:30 O'Hare International Airport
16h48
14:18 Denver International Airport1 change
frontier_airlinesF91416 · F9351721:30 O'Hare International Airport
23h42
21:12 Denver International Airport1 change
frontier_airlinesF92198 · F9359921:51 O'Hare International Airport
7h13
05:04 Denver International Airport1 change
unitedUA249422:50 O'Hare International Airport
2h58
01:48 Denver International Airport0 changesdirect
frontier_airlinesF9148323:00 O'Hare International Airport
3h04
02:04 Denver International Airport0 changesdirect

This is the last flight of the day.

Find all the dates and times for this journey

How far in advance should I book flight tickets from Chicago, IL to Denver, CO?

The best time to book your flight from Chicago, IL to Denver, CO is 77 days before departure. See how prices for flights change on the Chicago, IL to Denver, CO route.
Prices are for one-way tickets for one passenger from Chicago, IL to Denver, CO per month. Insights are sourced from fares found by Omio users in the last 12 months. Current prices may differ as prices vary depending on the time of day, class or how far in advance you book your flight from Chicago, IL to Denver, CO.

Compare prices and tickets Chicago, IL to Denver, CO by train, coach or flight

Compare train, coach and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.

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Why should you book Chicago, IL to Denver, CO flights with Omio?

United as well as Frontier Airlines or American Airlines offer flights services from Chicago, IL to Denver, CO.
Omio is an official ticket reseller for all your travel options from Chicago, IL to Denver, CO.

Why book with Omio vs United?

  • Compare with other providers: On Omio, you can not only buy tickets for United, but also compare tickets for the likes of Frontier Airlines or American Airlines to find the best option for your trip from Chicago, IL to Denver, CO.
  • Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
  • Compare all your options: Omio allows you to compare United with all available travel options, which are train, bus and flight to ensure you get the best deal for traveling from Chicago, IL to Denver, CO.

Why book with Omio over Kayak, Skyscanner or Trip?

  • Compare with other providers: On Omio, you can also compare tickets for the likes of Frontier Airlines or American Airlines to find the best option for your trip from Chicago, IL to Denver, CO.
  • Multiple modes of transport: Omio allows you to compare travel options including train, bus and flight to find the ideal travel option from Chicago, IL to Denver, CO.

Airlines: United, Frontier Airlines, American Airlines from Chicago, IL to Denver, COFind the best flights between Chicago, IL to Denver, CO with Omio's travel partners United, Frontier Airlines, American Airlines from £24. We can find you the best deals, schedules and tickets when comparing and booking the best trip.

United

About
United Airlines, established in 1926, is a major U.S. airline headquartered in Chicago, Illinois. Operating an extensive domestic and international network, United serves more destinations than any other airline, connecting travelers across six continents. The airline's eight hubs include Chicago–O'Hare, Denver, Houston–Intercontinental, Los Angeles, Newark, San Francisco, Washington–Dulles, and Guam. As a founding member of the Star Alliance, United offers a comprehensive range of services, including regional flights through United Express, catering to both leisure and business travelers. The airline is committed to sustainability, investing in sustainable aviation fuel and innovative technologies to reduce its environmental impact.
Luggage & cancellation policy
Average Duration
2h 45m
Cheapest Price
£97
United frequency
40 a day
Luggage included
Carry-on baggage allowance is 7kg total (2 pieces max. ) for both Choice and Flex fares on United Airlines and Virgin Australia flights.
Additional luggage
Excess baggage fees apply for additional checked luggage beyond the standard allowance.
Luggage storage
Both airlines provide checked baggage services for storing luggage during flights.
Cancellation Policy
Cancellation fees apply per person, per booking, with specific fees for different fare types.
Refund
Not applicable to flights; however, full refunds are available if flights are canceled by the airline.
Pregnant on board
Pregnant passengers are permitted to travel, with specific guidelines and medical certificates required after a certain gestational period.
Unaccompagned minor
Unaccompanied minors are permitted to travel, with specific age restrictions and services provided.
Amenities on board the airplane
Wifi
Food sold onboard
Meals and snacks are included on international flights operated by United Airlines and Virgin Australia.
Seat reservation
Seat selection may incur additional fees, depending on the fare type and airline.
Toilets
USB plugs
Accessibility
United Airlines and Virgin Australia offer services to and within Australia, providing accessible travel options for passengers with mobility needs.
Bikes
Both airlines permit bicycles onboard, with specific guidelines and fees.
Pets
United Airlines and Virgin Australia allow pets onboard, subject to specific policies and fees.

American Airlines

About
American Airlines is one of the largest airlines in the world, connecting travelers to hundreds of destinations across the United States, Latin America, Europe, Asia, and beyond. Operating from major hubs such as Dallas/Fort Worth, Miami, and Charlotte, American offers a wide range of travel options. Passengers can choose from Economy with affordable fares, Premium Economy with extra space, or Business and First Class featuring flat-bed seats, premium dining, and lounge access. With a modern fleet and membership in the oneworld alliance, American Airlines combines global reach with comfort and reliability.
Luggage & cancellation policy
Average Duration
2h 48m
Cheapest Price
£63
American Airlines frequency
5 a day
Luggage included
1 carry-on bag (22 x 14 x 9 inches) and 1 personal item (18 x 14 x 8 inches) included in most fares
Additional luggage
Checked bags fees vary by route. First checked bag typically $30, second $40 on domestic flights
Cancellation Policy
Basic Economy tickets cannot be changed or refunded. Other fares allow changes with fee, refunds subject to fare rules.
Pregnant on board
Passengers can fly up to 36 weeks for single pregnancies, 32 weeks for multiple pregnancies. Medical certificate required within 7 days of departure if within 4 weeks of due date.
Unaccompagned minor
Children ages 5-14 can travel alone using American Airlines Unaccompanied Minor Service. Service fee is $150 each way.
Amenities on board the airplane
Wifi
Food sold onboard
USB plugs
Accessibility
American Airlines provides wheelchair assistance and special services for passengers with disabilities. Assistance must be requested at least 48 hours before departure.
Pets
Small dogs and cats allowed in cabin for $125 fee. Must be in approved carrier under seat. Service animals allowed.

Frontier Airlines

About
Frontier Airlines is a major American ultra-low-cost carrier headquartered in Denver, Colorado, operating flights to over 120 destinations across the United States, Caribbean, Mexico, and Central America. Known for its \Low Fares Done Right\" philosophy, Frontier focuses on offering affordable travel by allowing passengers to choose and pay only for the services they need, such as seat selection or baggage. The airline is also recognized for its commitment to fuel efficiency, claiming to be \"America's greenest airline\" due to its modern, lightweight aircraft and operational practices. A distinctive feature of Frontier is the animal featured on the tail of each aircraft, highlighting North American wildlife."
Luggage & cancellation policy
Average Duration
2h 51m
Cheapest Price
£24
Frontier Airlines frequency
11 a day
Luggage included
Personal item (18 x 14 x 8 inches) included
Additional luggage
Checked bag fees start at $79 per bag
Cancellation Policy
Non-refundable tickets, changes permitted for fee starting at $79 plus fare difference
Pregnant on board
Pregnant women can travel up to 7 days before due date, medical certificate required after 36 weeks
Unaccompagned minor
Children ages 5-14 can travel alone for $100 fee each way, must be nonstop flight only
Amenities on board the airplane
Wifi
Accessibility
Frontier Airlines offers assistance for passengers with disabilities, including wheelchair service and boarding assistance. Passengers are encouraged to request these services in advance to ensure availability and proper arrangements.

FAQs: Chicago, IL to Denver, CO flights

Find answers to the most common questions about traveling from Chicago, IL to Denver, CO by flight. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest flight, the cheapest option, or tips for making the most of your visit at Denver, CO, this guide helps you travel smarter and with confidence.

FAQs
Cheap plane tickets from Chicago, IL to Denver, CO can start from as little as £24 when you book in advance. The average flight ticket price for Chicago, IL to Denver, CO is £181; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by plane from Chicago, IL to Denver, CO is 2h 45m to travel the 1475 km long route. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
The earliest flight from Chicago, IL to Denver, CO leaves at 0:01. Plan your trip with the Journey Planner   from Omio.
The latest flight from Chicago, IL to Denver, CO leaves at 23:58.
Yes, there are 10 direct flights a day from Chicago, IL to Denver, CO with United, Frontier Airlines, American Airlines. Schedules can vary on holidays or weekends with fewer direct flights.
When taking a flight from Chicago, IL to Denver, CO, you can count on United, Frontier Airlines, American Airlines for the best way to get you to Denver, CO. You can also check all possible airlines who offer a service between Chicago, IL and Denver, CO and compare the amenities they offer before buying a plane ticket.
Flights from Chicago, IL to Denver, CO generally leave from O'Hare International Airport and arrive in Denver International Airport .O'Hare International Airport is 3 km away from Chicago, IL city centre and Denver International Airport is 18 km from Denver, CO city centre.
The cheapest month for a flight from Chicago, IL to Denver, CO is June.
It's helpful to compare your options as there are 3 ways to travel between Chicago, IL and Denver, CO including taking a train, coach and flight.
Since neither Chicago, IL nor Denver, CO are in the Schengen Area, passport requirements depend on the specific immigration rules of United States and United States. Entry and visa requirements can be subject to change. For the latest information, check with your destination's embassy or consulate.
There is a time difference of 1 h between Chicago, IL and Denver, CO all year round.
For domestic flights we recommend to arrive 1.5 to 2 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.
Most airlines permit carry-on bags that fit within specific dimensions (e.g., 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.
Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs). Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you. Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.
The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.

popular airports

Important Stations and Airports in Chicago, IL and Denver, CO

Chicago
Denver
The major airport for departures in Chicago is O'Hare International Airport. Find all the information you need to know about services, amenities and connections at O'Hare International Airport for your trip from Chicago to Denver.
O'Hare International Airport (ORD)WifiShoppingParkingDiningATMTaxisAccessibilityWCHotelShowerLoungeLost and Found OfficeCar Rental
Amenities at airport
WifiWifi
ShoppingShopping
ParkingParking
DiningDining
ATMATM
TaxisTaxis
AccessibilityAccessibility
WCWC
HotelHotel
ShowerShower
LoungeLounge
Lost and Found OfficeLost and Found Office
Car RentalCar Rental
information
address
Address
10000 W O'Hare Ave, Chicago, IL 60666, USA
ticketOfficeHours
Distance to city center
3 km
carConnection
Car connection
I-190, Exit 1
Wifi
Wifi
  • Free Wi-Fi available throughout the airport.
Shopping
Shopping
  • Shops are located in all terminals, including duty-free and brands like Hudson and MAC Cosmetics.
Parking
Parking
  • Parking available with options including hourly, daily, and economy lots, approximately 2.85€ ($3) per hour.
Dining
Dining
  • Restaurants are located in all terminals, offering a variety of cuisines including American and intertiol. Top options include Tortas Frontera and Publican Tavern.
Taxis
Taxis
  • Available outside the terminal.
Accessibility
Accessibility
  • Elevators, ramps, toilets
WC
WC
  • Available throughout the airport.
Hotel
Hotel
  • Hotels such as Hilton Chicago O'Hare are located on airport grounds, with others like the Hyatt Regency nearby.
Shower
Shower
  • Showers are available in some lounges, such as the United Club, but access may require a fee or membership.
Lounge
Lounge
  • Lounges available, including United Club and American Airlines Admirals Club.
Lost and Found Office
Lost and Found Office
  • Lost and Found located in terminal 1, near the baggage claim area.
Car Rental
Car Rental
  • Car rental services are available at the Multi-Modal Facility, with companies like Hertz and Avis.
Public transport options for O'Hare International Airport
  • CTA Blue Line, O'Hare Station, 45 minutes to city center

More options for your journey from Chicago, IL to Denver, CO

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