£70 Find Cheap Flights from Dublin 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 from Dublin to Portsmouth departing on 11/11. 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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Cheap Flights from Dublin to Portsmouth (DUB-SOU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dublin 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 from Dublin to Portsmouth

Wed, 3 Dec - Wed, 17 Dec
Aer Lingus Logo
13:55 - 15:35DUB-SOU
1h 40mdirect
Aer Lingus Logo
12:25 - 14:00SOU-DUB
1h 35mdirect
£81Aer Lingus
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Wed, 3 Dec - Mon, 8 Dec
Aer Lingus Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£81Aer Lingus
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Thu, 4 Dec - Mon, 8 Dec
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
Aer Lingus Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£82Aer Lingus
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Wed, 3 Dec - Wed, 17 Dec
Multiple Airlines Logo
13:55 - 15:35DUB-SOU
1h 40mdirect
Multiple Airlines Logo
09:25 - 21:30SOU-DUB
12h 05m1 stop
£116Multiple Airlines
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Wed, 3 Dec - Mon, 8 Dec
Multiple Airlines Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
Multiple Airlines Logo
12:05 - 21:30SOU-DUB
9h 25m1 stop
£120Multiple Airlines
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Fri, 19 Dec - Fri, 26 Dec
KLM Logo
05:55 - 17:00DUB-SOU
11h 05m1 stop
KLM Logo
17:30 - 22:10SOU-DUB
4h 40m1 stop
£176KLM
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Fri, 1 May - Mon, 4 May
KLM Logo
20:45 - 08:45DUB-SOU
12h 00m1 stop
KLM Logo
17:35 - 22:25SOU-DUB
4h 50m1 stop
£182KLM
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Fri, 1 May - Mon, 4 May
British Airways Logo
07:00 - 08:40DUB-SOU
1h 40mdirect
British Airways Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
£277British Airways
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Thu, 4 Dec - Mon, 8 Dec
British Airways Logo
06:30 - 14:05DUB-SOU
7h 35m1 stop
British Airways Logo
20:10 - 21:50SOU-DUB
1h 40mdirect
£321British Airways
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Fri, 1 May - Mon, 4 May
Blue Islands Logo
14:45 - 15:40DUB-SOU
24h 55m1 stop
Blue Islands Logo
10:20 - 14:05SOU-DUB
3h 45m1 stop
£338Blue Islands
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Everything you should know

Cheapest return fare
£81
Overall average: £97
Aer Lingus
Wed 3/12Wed 17/12
DUB - SOU • Direct
Cheapest one-way flight
£45
Typical prices: £40-£68
Aer Lingus
Tue 11/11
DUB - SOU • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Portsmouth!
Useful Info

Good to know - Cheap tickets from Dublin to Portsmouth

Low seasonJanuary
Cheapest flight£44
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (38% more expensive on average)
Flight from Dublin to Southampton

When to book flights from Dublin to Portsmouth

Are your dates flexible? Find out the best times to travel from Dublin to Portsmouth based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs for booking flights from Dublin to Portsmouth

  • Which airports will I be using when flying from Dublin to Portsmouth?

    When flying out of Dublin you’ll be using Dublin. Portsmouth does not have its own airport so you’ll be flying into nearby Southampton Eastleigh airport, which is 14.7 mi away.

  • How long does a flight from Dublin to Portsmouth take?

    Direct flights cover the 268 miles separating Dublin and Portsmouth in about 1h 40m.

  • How many flights are there between Dublin and Portsmouth?

    7 direct flights run between Dublin and Portsmouth on a daily basis. On average, there are about 50 departures each week.

  • What’s the cheapest day of the week to fly between Dublin and Portsmouth?

    Consider leaving on a Wednesday and avoid Thursdays if you're looking for the best rates. For your return to Dublin, you’ll find the best rates on Wednesdays and the most expensive ones on Saturdays.

  • How does KAYAK find such low prices on flights from Dublin 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 from Dublin to Portsmouth.

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

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

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

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

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Dublin 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 from Dublin up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Dublin to Portsmouth?

    In the last 72 hours, the cheapest one-way ticket between Dublin and Portsmouth found on KAYAK was with Aer Lingus for £44. Aer Lingus offered a return connection from £81 and KLM from £176.

Top tips for finding cheap flights from Dublin to Portsmouth

  • There is no airport in Portsmouth. Instead, you’ll be flying into Southampton Airport when flying between Dublin and Portsmouth.
  • The cheapest flight from Dublin to Portsmouth was found 27 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is December.

Reviews of the top airline flying from Dublin to Portsmouth

 
Need help choosing which airline to fly with from Dublin 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 1365 reviews
8.0Crew
6.9Entertainment
7.4Boarding
7.1Comfort
6.6Food
Airline reviews

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

10.0 ExcellentAnisha, Oct 2025DUB - EWR
Read more Aer Lingus reviews

Experience was great overall. However, the connection time between my flights (1hr 15 mins) was too short. We had to get through security check and US immigration in that time, and I made it to the gate just as they were announcing it was about to close. Flights with such a short connection time should maybe not be offered for purchase, or an advance alert would be helpful. Other than that the in-flight experience was excellent, especially the food. Many thanks!

The seats needs to be comfortables, at least please add more padding to the seats.

Incredible service. Incredible entertainment. I felt like they just kept serving us something new avery hour. My wife and I both had a joyous flight.

They out me in the baby row so I was surrounded by toddlers, they also did not send my luggage and was not able to book my connecting flight

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

Dinner was fabulous. Would have enjoyed a wine with it. None offered... for sale??? Breakfast was disappointing but adequate amount of food.

Excellent flight and crew. Boarding at Dublin Airport was a very difficult trying to find the right gate.

Dublin airport is big and US Customs and Immigration screening officers are is part of the process there. This eliminates screening upon arrival to US, however should be taken into consideration when playing your transfer. After all, pleasant experience enhanced by draft Guinness and Irish coffee at the buffet area near the gate. We loved boarding by the row, back of the airplane first.

There was a mixup with our tickets. They said they did not receive payment for them but yet we had seat assignments. We had to purchase last-minute tickets which cost us three times as much. that’s why they got a rated of a one.

Everything you need to know for your flight from Dublin to Portsmouth

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