DUB

£40 Find Cheap Flights from Portsmouth to Dublin

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portsmouth to Dublin departing on 7/10. 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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Cheap Flights from Portsmouth to Dublin

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

Sat, 13 Dec - Wed, 17 Dec
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
Aer Lingus Logo
13:55 - 15:35DUB-SOU
1h 40mdirect
£95Aer Lingus
Find Deal
Tue, 7 Oct - Wed, 29 Oct
Multiple Airlines Logo
12:25 - 16:55SOU-DUB
4h 30m1 stop
Multiple Airlines Logo
10:10 - 11:55DUB-SOU
1h 45mdirect
£96Multiple Airlines
Find Deal
Sat, 13 Dec - Thu, 18 Dec
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
£97Aer Lingus
Find Deal
Sat, 13 Dec - Sun, 14 Dec
Aer Lingus Logo
09:30 - 11:10SOU-DUB
1h 40mdirect
Aer Lingus Logo
07:00 - 08:45DUB-SOU
1h 45mdirect
£98Aer Lingus
Find Deal
Wed, 8 Oct - Sun, 12 Oct
Multiple Airlines Logo
09:00 - 17:15SOU-DUB
8h 15m1 stop
Multiple Airlines Logo
06:55 - 08:35DUB-SOU
1h 40mdirect
£99Multiple Airlines
Find Deal
Wed, 15 Oct - Tue, 21 Oct
Multiple Airlines Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
Multiple Airlines Logo
18:20 - 08:30DUB-SOU
14h 10m1 stop
£100Multiple Airlines
Find Deal
Fri, 10 Oct - Sun, 12 Oct
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
Aer Lingus Logo
06:55 - 08:35DUB-SOU
1h 40mdirect
£101Aer Lingus
Find Deal
Wed, 15 Oct - Sun, 19 Oct
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
Aer Lingus Logo
06:55 - 08:35DUB-SOU
1h 40mdirect
£102Aer Lingus
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Multiple Airlines Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
Multiple Airlines Logo
21:00 - 12:45DUB-SOU
15h 45m2 stops
£104Multiple Airlines
Find Deal
Fri, 26 Sep - Tue, 30 Sep
Aer Lingus Logo
20:00 - 21:35SOU-DUB
1h 35mdirect
Aer Lingus Logo
06:35 - 08:15DUB-SOU
1h 40mdirect
£104Aer Lingus
Find Deal

Everything you should know

Cheapest return fare
£95
Typical prices: £111-178
Aer Lingus
Sat 13/12Wed 17/12
SOU - DUB • Direct
Cheapest one-way flight
£40
Typical prices: £63-147
Aer Lingus
Tue 7/10
SOU - DUB • 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 Dublin!
Useful Info

Good to know - Cheap tickets from Portsmouth to Dublin

Low seasonJanuary
Cheapest flight£40
Best time to beat the crowds (12% less expensive on average)
Most popular time to fly (3% more expensive on average)
Flight from Southampton to Dublin

When to book flights from Portsmouth to Dublin

Are your dates flexible? Find out the best times to travel from Portsmouth to Dublin 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 Portsmouth to Dublin

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

    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 Portsmouth to Dublin.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Dublin from Portsmouth 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 Portsmouth to Dublin?

    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 Dublin with an airline and back to Portsmouth with another airline.

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

    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 Dublin from Portsmouth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines flying from Portsmouth to Dublin

 
Need help choosing which airline to fly with from Portsmouth to Dublin? 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.
7.8
KLMOverall score based on 1386 reviews
7.3Food
8.4Crew
7.8Boarding
7.7Comfort
7.2Entertainment
Airline reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

2.0 MediocrePeter, Aug 2025SAN - AMS
Read more KLM reviews

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Delays resulting in missed connecting flight. Attendant failed to arrange special assistance as promised to get us on connecting flight. Robyn was the particular attendant.

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

Coming from the EU to the USA, Aer Lingus is a very good choice. You clear U.S. border control while still at the departure airport, so when you land in the States, you don’t need to go through the entry process again — very efficient and fast. In terms of comfort, Aer Lingus is better than the usual EU carriers like KLM, Lufthansa, or Air France, and also better than United. There’s more legroom, and the crew is helpful and kind. The food is average but slightly better than most airlines. Overall, the crew is definitely better than on American Airlines, though not quite at the level of Virgin.

Best travel day I've had in a long time. Everything went perfectly, no delays. 10 out of 10

Seat is business could have been a lot cleaner, but space was nice and seat was comfortable

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Flight was delayed by 1 hour 45 minutes. Aircraft was cramped, dirty and uncomfortable. Boarding staff more interested in charging you for oversize baggage than getting you on board. Overall not a pleasant experience.

They were extremely unprofessional and unhelpful at check in. They did not understand laws related to Spanish residents flying with family It was very discriminatory the way we were treated.

A delay of almost 3 hours. It was evident that the staff wanted us to board urgently, to the point of rudeness, to avoid paying compensation

It's not the staff's fault. The cabin crew do their best but the setup in Stansted Airport by Ryanair is poor. The herding of people like cattle is unacceptable before boarding and is something that's in every airport but only in Stansted have I seen the queueing of passengers outside the plane on the tarmac and the crew only turning up with maybe 5 minutes to depart. This is a resource issue . Yes prices are good but seemingly comes with a price of poor treatment of customers. I'll pay more next time

On time arrival but the aircraft had seen better days and needed a deep clean.

It was appalling, full of young people who were drunk and disobeying instructions to sit down. Crew did nothing to enforce. There was a Ryanair pilot sitting in the aisle opposite me who talked through out the safety briefing so loudly I couldn’t hear. Whole thing felt unsafe

Delayed for 2 hours lack of communication no refreshments as promised and the drinks on board were not as ordered and refused to refund

Flight was fine, crew were good, cabin director spoke far too much; disembarking at Dublin Airport and entry into the terminal building was just dreadful, like entering the back door of a neglected factory building. What an awful impression it must give to first time visitors to Ireland.

Straight forward checking as long as you have completed every single detail online, prior to checking day. Efficient boarding, seating is ok for a two hour flight. Fulfilledour travel requirements from Manchester to Marseille.

I couldn’t understand the aircraft tannoy announcements I was in seat 20C - nobody in our row could either. Speakers a bit too quiet plus messages read out too fast. Otherwise excellent flight. (Flight delayed by 50 mins)

what would have been better would have been that my booking not been canceled by the system and had I been informed that the booking had been cancelled by the system I could have immediately rebooked and not found out that there was an issue when I was told by the system that I needed to book in. It would have also been good if either the booking agent or BA or anyone been in anyway useful. In the end I had to rebook a flight at an additional cost of $350. So no I'm not impressed by BA any of the other parties involved.

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

The flight was fine but no food available apart from snacks like Pringles and olives which was a problem for me as I hadn’t eaten anything that day. But the worst problem was BA left 24 suitcases in Heathrow as the flight was too full but didn’t tell anyone. So we waited for ages at Toulouse airport with no information and finally found out from the one member of staff in the baggage collection area who explained what had happened and apologised for no announcement being made but said that was their policy. Then BA contacted me today to say they have found my luggage and can deliver it to me on Tuesday - half way through my holiday!!!! So a friend has had to make a four hour round trip in his car to go and collect the luggage from the airport so we can get it today. A TOTAL SHAMBLES AND DISREGARD BY BA FOR THEIR PASSENGERS’ BEST INTERESTS.

Much much better than my previous times on British Airways the food was spot-on and the service was really genuine and attentive

Flight was delayed but my previous flight was as well so It worked to my advantage. This was my first time in first class. I don't think they ever stopped feeding us. The seating area was very spacious and comfortable. The attendants were wonderful, warm, friendly and very personable.

First time on BA but will fly with them from now on! Everything about the flight was superb!!!

Horrible experience. They broke the handle of my checked in suitcase and then refused pay for damages

We had a pretty good experience. Enjoyed both the flights. Crew was very good and helpful.

The flight was very delayed in taking off - which was out of control of the crew, but then the pilot worked hard so we only arrived about 30 minutes late. Everyone was very friendly and accommodating!

They issued seat assignments and sat my 2 year-old in the row behind me, separate from me and my daughter. Communication/ customer service was terrible. They told me to change it in London, then in London, they told me to talk to the cabin crew, then a supervisor came and stuck us in the back of the plane when we were supposed to be in row 25. Overall, they need to really work on their customer service. Additionally the food was terrible and they ran out of meals and didn’t have any kid options. To top it off there was no in-flight entertainment for the first hour of the trip.

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