€56 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 19/4. 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, 0 bags

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Everything you should know

Cheapest return fare
€110
Overall average: €127
Aer Lingus
Thu 26/2Mon 2/3
DUB - SOU • Direct
Cheapest one-way flight
€56
Typical prices: €58-€120
Aer Lingus
Sun 19/4
DUB - SOU • Direct
Start a new search
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We hope you love your trip to Portsmouth!
Flight Deals
Useful Info
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

Thu, 26 Feb - Mon, 2 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€110Aer Lingus
Thu, 26 Feb - Mon, 2 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€115Aer Lingus
Fri, 6 Mar - Fri, 13 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€116Aer Lingus
Thu, 19 Mar - Fri, 20 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€118Aer Lingus
Sun, 1 Mar - Tue, 3 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
16:05 - 17:40
SOU
-
DUB
1h 35mdirect
€119Aer Lingus
Sun, 15 Mar - Thu, 19 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€120Aer Lingus
Fri, 20 Mar - Fri, 20 Mar
Aer Lingus Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50
SOU
-
DUB
1h 40mdirect
€120Aer Lingus
Wed, 1 Apr - Wed, 8 Apr
Aer Lingus Logo
06:25 - 08:05
DUB
-
SOU
1h 40mdirect
Aer Lingus Logo
09:10 - 10:50
SOU
-
DUB
1h 40mdirect
€123Aer Lingus
Sat, 28 Feb - Mon, 2 Mar
Multiple Airlines Logo
07:00 - 08:45
DUB
-
SOU
1h 45mdirect
Multiple Airlines Logo
17:45 - 23:00
SOU
-
DUB
5h 15m
1 stop
€126Multiple Airlines
Sun, 29 Mar - Sun, 5 Apr
Multiple Airlines Logo
23:55 - 20:05
ORK
-
SOU
20h 10m
2 stops
Multiple Airlines Logo
10:00 - 07:50
SOU
-
ORK
21h 50m
2 stops
€195Multiple Airlines
Useful Info

Good to know – Book Cheap Portsmouth Plane Tickets

Low seasonJanuary
Cheapest flight€56
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (31% more expensive on average)
Flight from Dublin to Southampton

FAQs - booking Portsmouth flights

  • How long is the flight to Portsmouth?

    Flights from Dublin1h 41m

  • 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.
  • Looking for cheap airfare to Portsmouth? 25% of our users found return tickets to Portsmouth for the following prices or less: From Dublin €130
  • 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 1451 reviews
7.1Comfort
8.1Crew
7.4Boarding
6.9Entertainment
6.6Food
Airline reviews

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

10.0 ExcellentAnonymous, Feb 2026
DUB - LHR
Read more Aer Lingus reviews

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

One of the best flight experiences I've have had in along time. Would fly with them again.

So, the trip from Dublin to LA did not really happen because the flight took off before we could finish the transfer.

Very nice experience. Flight had good entertainment system and good food options. Customer service was very friendly and nice as well.

Like - the crew were nice Dislike - sitting on the tarmac for long periods after boarding and landing.

I was not admitted to the flight!!! i need a refund for this.

It’s my new favourite airline! Everything was smooth and relaxed!

One of the best flights I've been on in a while. Very genuinely friendly staff. Courteous, kind, respectful. On a past flight (not Aer Lingus) I remember being woken up rudely to put my seat forward. Like a child being berated for something. Oddly jarring experience when someone could just tap you gently on the shoulder and gesture kindly. But I noticed the Aer Lingus staff were incredibly patient with everyone on the plane. It's the holiday season and I noticed a lot more elderly customers on the plane than I typically see flying, and the staff went above and beyond with helping accommodate people. Service throughout the flight was flawless. They came through offering water, and picking up garbage at perfect intervals. Seemed like this flight, everyone was on point. And the flight landed early on top of that

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

Customer service was excellent! The app was terrible, tried several times to check in without success! But the young lady that checked us in was absolutely terrific and helpful.

Everything you need to know for your flight to Portsmouth