€44 Find Cheap Flights to Portsmouth

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Portsmouth departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Flight Deals

Cheap Flights to Portsmouth

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Portsmouth that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Portsmouth

Tue, 16 Sep - Tue, 23 Sep
Aer Lingus Logo
06:35 - 08:15DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€80Aer Lingus
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Wed, 1 Oct - Wed, 8 Oct
Aer Lingus Logo
06:25 - 08:05DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€81Aer Lingus
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Aer Lingus Logo
06:25 - 08:05DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€84Aer Lingus
Find Deal
Sun, 12 Oct - Tue, 14 Oct
Aer Lingus Logo
06:55 - 08:35DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€85Aer Lingus
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Aer Lingus Logo
06:25 - 08:05DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€86Aer Lingus
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Aer Lingus Logo
06:35 - 08:15DUB-SOU
1h 40mdirect
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€102Aer Lingus
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Tue, 16 Sep - Tue, 23 Sep
 Logo
21:00 - 08:30DUB-SOU
11h 30m1 stop
 Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
€117
Find Deal
Mon, 15 Sep - Mon, 22 Sep
KLM Logo
15:25 - 08:45ORK-SOU
41h 20m2 stops
KLM Logo
17:35 - 14:40SOU-ORK
21h 05m2 stops
€548KLM
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Mon, 1 Sep - Fri, 5 Sep
KLM Logo
17:05 - 08:50ORK-SOU
15h 45m1 stop
KLM Logo
17:35 - 16:35SOU-ORK
23h 00m1 stop
€576KLM
Find Deal
Mon, 15 Sep - Mon, 22 Sep
KLM Logo
17:05 - 08:45ORK-SOU
15h 40m1 stop
KLM Logo
17:35 - 22:30SOU-ORK
4h 55m1 stop
€662KLM
Find Deal
Useful Info

Good to know – Book Cheap Portsmouth Plane Tickets

Low seasonFebruary
Cheapest flight€44
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (40% more expensive on average)
Flight from Dublin to Southampton

FAQs - booking Portsmouth flights

  • How long is the flight to Portsmouth?

    Flights from Dublin1h 37m
  • How to fly to Portsmouth?

    You cannot fly directly to Portsmouth. KAYAK recommends you fly to Southampton Eastleigh (SOU) (23.61 km from Portsmouth). From there you can hire a car or take a taxi.

  • What airports are near Portsmouth?

    The closest airport is Southampton Eastleigh (SOU) (23.61 km). Other nearby airports are London Gatwick (LGW) (73.89 km), London Heathrow (LHR) (84.73 km) or London All airports (LON) (101.61 km). KAYAK recommends you fly to Southampton Eastleigh.

  • How far is Southampton Eastleigh Airport from central Southampton?

    The city centre of Southampton is 6 km from Southampton.

  • What is the name of Southampton’s airport?

    When flying to Southampton, you'll arrive at Southampton Eastleigh Airport (SOU). The airport is also known as Eastleigh or Southampton.

  • How does KAYAK find such low prices on flights to Portsmouth?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Portsmouth.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Portsmouth?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portsmouth is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Portsmouth?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portsmouth with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Portsmouth?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Portsmouth

  • There is no major airport in Portsmouth,it is instead served by London's airports. We recommend you fly to London Heathrow Airport Airport, however you can also fly to London Gatwick Airport airport, London City Airport airport, London Luton Airport airport, London Stansted Airport airport or London Southend Airport airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Portsmouth flight deals.

Reviews of the top airline flying to Portsmouth

 
Need help choosing which airline to fly with from Ireland to Portsmouth? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1221 reviews
6.9Entertainment
7.1Comfort
7.3Boarding
6.5Food
8.0Crew
Airline reviews

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

6.0 GoodGail, Aug 2025DUB - IOM
Read more Aer Lingus reviews

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

It was my first transatlantic flight with Aer Lingus. Very enjoyable. Thank you for making international travel enjoyable again.

The space between seats was reduced even further. Could not even open the tray table fully and got compressed the moment the front guy reclined. For a long haul flight it was extremely uncomfortable.

Not satisfying due to loss Luguage for 4days. Damage Luguage that had no way to fill up a report for and me as a client to spend more money and time to replace it. Thank you for soliciting my opinion, but it was unfortunately a very disappointing experience. Stephanie Zvi

My experience with Aer Lingus was nice, and I would be happy to fly with them again. However, my seat pocket had not been cleaned and had dirty wipes in it. I have flown with Aer Lingus before and do not recall anything like that happening, so presumably this was a one-off kind of thing. For the meal, I asked if there was possibly one without my allergens and the flight attendant gave me the one she thought would be fine. She did not know what allergens were in it, but when I received the meal the allergens were all listed right on the top of the package, so I was confused about why she didn’t know how to check what they were. In future, I will see if it’s possible to request an allergen-free meal ahead of time. But overall, I had a pleasant experience. My experience with Underpricer was very unenjoyable and because of them I do not plan to book through Kayak in the future. I have used Kayak numerous times, but this booking experience was so unpleasant. They called me numerous times and also emailed me to try to get me to select a seat. However, when I had a question later on, I was kept on hold for 20/30 minutes before I finally hung up. I also emailed them but never received a response, which I did not appreciate, especially given their previous frequent calls when they wanted something from me.

Delightful flight, ahead of time with a super crew, thanks

I wish Aer Lingus offered free wifi and had power outlets at the seats. Overall, the flight was good. Seat back entertainment had some interesting options. Food and snack options were mediocre at best. I enjoyed the canned red wine.

In business class overhead bins were minuscule. Had to use cabin staff to find a place for my carry-on bag. Boarding process was shambolic, as “passengers who needed assistance in boarding” absorbed an excessive amount of time and attention that Aer Lingus was apparently unprepared for.

Aer Lingus was fabulous.nhowever, Aiirfare Assist who Kayak routes me to to purchase tickets for m was awful. They messed up my reservation so bad that after about six hours on the phone with them over the week before departure, I had been choice but to show up at the airport. The Aer Lingus staff were amazing and got it sorted out but I would recommend not using Airfare Assist.

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

Everything you need to know for your flight to Portsmouth

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