The cheapest and fastest trains from Cathays (CYS) to London Heathrow Airport
Cheapest price
£131
Average price
£145
Fastest journey
2 h 47 m
Average duration
2 h 50 m
Trains per day
18
Distance
189 km
The best way to find a cheap train ticket from Cathays (CYS) to London Heathrow Airport is to book your journey as far in advance as possible and to avoid travelling at rush hour.
The average ticket from Cathays (CYS) to London Heathrow Airport will cost around £145 if you buy it on the day, but you can find cheap train tickets today for only £131.
To travel from Cathays (CYS) to London Heathrow Airport you need to make at least 2 changes.
L65455+
P22791+
G24215 · G235326:083h04Cathays (CYS)9:12Heathrow Terminal 4 (HAF)£1311One-way3 changes
L64021+
P22794+
G23897 · G234097:322h55Cathays (CYS)10:27Heathrow Terminal 4 (HAF)£1311One-way3 changes
L65455+
P22791+
G24215 · G235326:082h58Cathays (CYS)9:06Heathrow Terminals 2 & 3 (HXX)£1311One-way3 changes
L64021+
P22794+
G23897 · G234097:322h49Cathays (CYS)10:21Heathrow Terminals 2 & 3 (HXX)£1311One-way3 changes
L65459+
P22792+
G24256 · G233596:263h16Cathays (CYS)9:42Heathrow Terminal 4 (HAF)£1311One-way3 changes
L65464+
P22793+
C287897:082h47Cathays (CYS)9:55Heathrow Terminals 2 & 3 (HXX)£1611One-way2 changes
L65455+
P22791+
C287776:082h47Cathays (CYS)8:55Heathrow Terminals 2 & 3 (HXX)£1611One-way2 changes
L64021+
P22794+
G23897 · G234097:322h49Cathays (CYS)10:21Heathrow Terminals 2 & 3 (HXX)£1311One-way3 changes
L65455+
P22791+
C287776:082h53Cathays (CYS)9:01Heathrow Terminal 5 (HWV)£1641One-way2 changes
L64021+
P22794+
G23897 · G234097:322h55Cathays (CYS)10:27Heathrow Terminal 4 (HAF)£1311One-way3 changes
Travel Information
Compare coach and train for Cathays (CYS) to London Heathrow Airport
Omio recommends booking the coach as it is the most popular option from Cathays (CYS) to London Heathrow Airport among Omio's users. If you are prioritising price take the coach with prices starting from £13. For those with little time consider booking a ferry which can get you there in 40m. The ticket price range depends on the travel mode: a coach costs an average of £13, and a train costs an average of £63.
Distance: 189 km
Compare train with
| Train | Most popular Coach | Ferry |
|---|---|---|
£83 Average Price | £15 Average Price Cheapest | £19 Average Price |
2h 53m Average total duration 2h 23m Onboard + 30m Additional time* | 4h 8m Average total duration 3h 38m Onboard + 30m Additional time* | 1h 40m Average total duration Fastest 40m Onboard + 1h 0m Additional time* |
Direct Options | Direct Options | Direct Options |
Live departures
Cathays (CYS) to London Heathrow Airport train times
The table below shows live departures for Cathays (CYS) to London Heathrow Airport trains for tomorrow, Tuesday 5 May. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
L65455+ P22791+ C28777 | 6:08 Cathays (CYS) | 2h53 | 9:01 Heathrow Terminal 5 (HWV) | 2 changes | |
L65455+ P22791+ G24215 · G23532 | 6:08 Cathays (CYS) | 3h04 | 9:12 Heathrow Terminal 4 (HAF) | 3 changes | |
L65455+ P22791+ G24215 · G23532 | 6:08 Cathays (CYS) | 2h58 | 9:06 Heathrow Terminals 2 & 3 (HXX) | 3 changes | |
L65455+ P22791+ G24215 · G23532 | 6:08 Cathays (CYS) | 3h09 | 9:17 Heathrow Terminal 5 (HWV) | 4 changes | |
L65455+ P22791+ G24215 · G23765 | 6:08 Cathays (CYS) | 3h27 | 9:35 Heathrow Terminal 5 (HWV) | 3 changes | |
L65455+ P22791+ G23532 | 6:08 Cathays (CYS) | 3h04 | 9:12 Heathrow Terminal 4 (HAF) | 2 changes | |
L65455+ P22791+ C28777 | 6:08 Cathays (CYS) | 2h47 | 8:55 Heathrow Terminals 2 & 3 (HXX) | 2 changes | |
L65459+ P22792+ C28783 | 6:26 Cathays (CYS) | 3h05 | 9:31 Heathrow Terminal 5 (HWV) | 2 changes | |
L65459+ P22792+ C28783 | 6:26 Cathays (CYS) | 2h59 | 9:25 Heathrow Terminals 2 & 3 (HXX) | 2 changes | |
L65459+ P22792+ G24256 · G23359 | 6:26 Cathays (CYS) | 3h20 | 9:46 Heathrow Terminal 5 (HWV) | 4 changes | |
L65459+ P22792+ G24256 · G23359 | 6:26 Cathays (CYS) | 3h16 | 9:42 Heathrow Terminal 4 (HAF) | 3 changes | |
L65459+ P22792+ G23359 | 6:26 Cathays (CYS) | 3h16 | 9:42 Heathrow Terminal 4 (HAF) | 2 changes | |
L65459+ P22792+ G24256 · G23359 | 6:26 Cathays (CYS) | 3h10 | 9:36 Heathrow Terminals 2 & 3 (HXX) | 3 changes | |
L65459+ P22792+ G24256 · G23784 | 6:26 Cathays (CYS) | 3h39 | 10:05 Heathrow Terminal 5 (HWV) | 3 changes | |
L65464+ P22793+ C28789 | 7:08 Cathays (CYS) | 2h47 | 9:55 Heathrow Terminals 2 & 3 (HXX) | 2 changes | |
L65464+ P22793+ G23392 | 7:08 Cathays (CYS) | 3h04 | 10:12 Heathrow Terminal 4 (HAF) | 2 changes | |
L64021+ P22794+ G23897 · G23409 | 7:32 Cathays (CYS) | 2h55 | 10:27 Heathrow Terminal 4 (HAF) | 3 changes | |
L64021+ P22794+ G23897 · G23409 | 7:32 Cathays (CYS) | 2h49 | 10:21 Heathrow Terminals 2 & 3 (HXX) | 3 changes | |
This is the last train of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets Cathays (CYS) to London Heathrow Airport by coach or train
Compare coach and train 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.
05 May
06 May
07 May
08 May
09 May
10 May
11 May
Why should you book Cathays (CYS) to London Heathrow Airport trains with Omio?
Why book with Omio vs Great Western Railway?
- 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 Great Western Railway with all available travel options, which are bus and train to ensure you get the best deal for traveling from Cathays (CYS) to London Heathrow Airport.
Why book with Omio over Wanderu?
- Multiple modes of transport: Omio allows you to compare travel options including bus and train to find the ideal travel option from Cathays (CYS) to London Heathrow Airport.
Journey information
Overview: Train from Cathays (CYS) to London Heathrow Airport
Trains from Cathays (CYS) to London Heathrow Airport run on average 18 times per day, taking around 2h 23m. Cheap train tickets for this journey start at £63 but you can travel from only £13 by coach.
The earliest train runs at 05:38, the last at 09:02. The fastest train covers the 189 km distance in 2h 49m.
Distance 189 km |
Average train duration 2h 23m |
Cheapest ticket price £63 |
Trains per day 18 |
Fastest train 2h 49m |
First train 5:38 |
Last train 9:02 |
Cheapest Month Dec |
Cheapest Day Sat |
High Season Jan - Mar |
Low Season Jul - Sept |
Busiest Day Sun |
Least Busy Day Sun |
Train companies: Great Western Railway from Cathays (CYS) to London Heathrow Airport trainsGreat Western Railway trains will get you between Cathays (CYS) and London Heathrow Airport from £13. With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Railway
FAQs: Cathays (CYS) to London Heathrow Airport train
Find answers to the most common questions about traveling from Cathays (CYS) to London Heathrow Airport by train. 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 train, the cheapest option, or tips for making the most of your visit at London Heathrow Airport, this guide helps you travel smarter and with confidence.

popular train stations
Important Stations and Airports in Cathays (CYS) and London Heathrow Airport
- Opening hours: Monday, Tuesday, Wednesday, Thursday, Friday 07:30 - 18:30 Saturday 09:30 - 15:30 Sunday Closed
- Car Park: No
- Staff help available: Yes
- Step free access coverage: No
- Step free access note: Category B3. While both platforms are step-free, there is no facility for wheelchair users, mobility scooter users or persons with reduced mobility to cross between Platform 1 and 2 due to a steep footbridge. Customers who have travelled from the Valleys and wish to access the University or the Civic Centre are advised to travel to Queen Street station, change onto a North-bound service and alight at Cathays on the return service.
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible ticket machines note: The ticket machine(s) take cash, and major debit and credit cards. The machine on the Cardiff-bound platform is only available during staffing hours. The machine on the Pontypridd-bound platform is available all the time.
- Ramp for train access: Yes
- Wheelchairs available: No
- Impaired mobility set down / pick up points available: No
- Travelodge
- Information available from staff: Yes - from ticket office
- Helpline Contact: 03333 211202
- Passenger Information Systems: Departure screens, Arrival screens
- Onward travel information: The nearest bus stop is on Park Place
- Location for Rail Replacement Services: At the bus stops adjacent to the Cardiff University Students' Union on Park Place
Most popular train connections from Cathays (CYS)
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