- Must visit
HMS Victory
A major naval museum where visitors can board Nelson’s flagship and explore life at sea through preserved decks and displays.
Flights from Dublin to Portsmouth depart on average 107 times per day, taking around 2h 34m. Cheap flight tickets for this journey start at £18 if you book in advance.
There are 59 flights per day. The earliest flight runs at 00:55, the last at 23:30. The fastest flight covers the 451 km distance in 1h 15m. October is the cheapest month to fly.
Distance 451 km |
Average flight duration 2h 34m |
Cheapest ticket price £18 |
Flights per day 107 |
Direct flights 59 |
Fastest flight 1h 15m |
First flight 0:55 |
Last flight 23:30 |
Cheapest Month Oct |
Cheapest Day Tue |
High Season Oct - Dec |
Low Season Jan - Mar |
Best time to book 5 days |
Cheapest price on 20 Sept
£78
Average ticket price on 20 Sept
£78
Fastest journey on 20 Sept
1 h 25 m
Average journey duration on 20 Sept
1 h 25 m
Flights on 20 Sept
1
Distance
451 km
The best way to find a cheap flight ticket from Dublin to Portsmouth is to book your journey as far in advance as possible and to avoid travelling at rush hour.
The average ticket from Dublin to Portsmouth will cost around £78 if you buy it on the day, but you can find cheap flight tickets today for only £78.
On Sun 20 Sept, we found 1 flights from Dublin to Portsmouth, including 1 direct services.
These direct flights cover the 451 km distance in an average of 1 h 25 m but if you time it right, some flights will get you there in just 1 h 25 m .
The slowest flights will take 1 h 25 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.


The table below shows live departures for Dublin to Portsmouth flights for today, Saturday 19 September. You can also manually refresh the results below to see updated flight journeys.
| Provider | Departs | Duration | Arrives | Changes | Tickets |
|---|---|---|---|---|---|
![]() | 19:40 Dublin | 1h25 | 21:05 Portsmouth | 0 changesdirect | |
| Sunday 20 September | |||||
![]() | 6:40 Dublin | 1h25 | 8:05 Portsmouth | 0 changesdirect | |
This is the last flight of the day. | |||||
Find all the dates and times for this journey
Compare 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.
Discover the best of Portsmouth — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect Portsmouth trip today.
A major naval museum where visitors can board Nelson’s flagship and explore life at sea through preserved decks and displays.
This working museum ship reveals cramped Victorian submarine life and the engineering behind one of Britain’s earliest submarines.
Portsmouth’s city museum covers local history, football heritage and art, with exhibits spanning the city’s people and places.
A historic waterfront district with cobbled lanes, pubs, sea walls and several key heritage sites within easy walking distance.
A long pebble beach promenade with piers, gardens and open sea views, well suited to relaxed walks along the Southsea seafront.
A broad common by the Solent, popular for walks, picnics and views of passing ships, the Isle of Wight and seafront landmarks.
A rich fruit cake packed with dried fruit, spice and treacle, long associated with Hampshire baking and often enjoyed at Christmas and local celebrations.
Fresh crab landed on the South Coast, usually served simply in sandwiches, salads or dressed shells, prized for sweet meat and Portsmouth’s seaside setting.
A classic Portsmouth and Hampshire pub dish of smoked haddock, potato and onion in a creamy sauce, baked until golden and comforting in coastal weather.
Popular Southsea spot for classic fish and chips and fresh seafood, with a casual atmosphere close to the seafront.
Smart waterfront restaurant in Old Portsmouth serving modern British dishes with strong seafood options in an elegant, relaxed setting.
Historic pub in Old Portsmouth known for traditional British cooking, cask ales and harbour views in a characterful setting.
Moderate for the UK. Hotels can be pricey in summer, but dining and local buses remain manageable for most city-break budgets.
Restaurants: 10-12.5% if not already added. Taxis: round up or 10%. Cafés and pubs: tipping is optional, though small change is appreciated for table service.
Find answers to the most common questions about traveling from Dublin to Portsmouth 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 Portsmouth, this guide helps you travel smarter and with confidence.

Most Dublin to Portsmouth flights use the Dublin Airport to London Heathrow Airport airport pair. Use this guide to compare Dublin and Portsmouth airports on this route, check city-centre transport, alongside checking practicalities like airport facilities and services.
Dublin Airport is 3 km from Dublin city centre. Public transport options include:
Dublin Airport has practical services for this route, including Wifi, Shopping, Parking, ATM, Taxis, Accessibility, WC, Shower, Lounge and Lost and Found Office.
Free Wi-Fi available throughout the airport. ATMs are located in both terminals.
Lost and found is available at the station.
Available at Dublin Airport: Parking, Taxis, WC.
Accessibility facilities are available at Dublin Airport: Ramps, assistance.
Here are some other resources that might have the information you need