DUB

£55 Find Cheap Flights from Portsmouth to Dublin – Compare and Save

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 8/8. 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
£104
Typical prices: £144-£219
Aer Lingus
Wed 22/7Wed 29/7
SOU - DUB • Direct
Cheapest one-way flight
£55
Typical prices: £69-£119
Aer Lingus
Sat 8/8
SOU - DUB • Direct
Direct flights
You can fly direct with Ryanair, Norwegian, and others. Average duration is 0
Direct flights
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Flight Deals

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

Wed, 22 Jul - Wed, 29 Jul
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
15:10 - 16:50
DUB
-
SOU
1h 40mdirect
£104Aer Lingus
Mon, 17 Aug - Wed, 16 Sep
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
17:50 - 19:30
DUB
-
SOU
1h 40mdirect
£105Aer Lingus
Wed, 22 Jul - Sun, 26 Jul
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
06:55 - 08:35
DUB
-
SOU
1h 40mdirect
£106Aer Lingus
Sat, 25 Jul - Sun, 26 Jul
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
06:55 - 08:35
DUB
-
SOU
1h 40mdirect
£107Aer Lingus
Sat, 25 Jul - Sun, 26 Jul
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
06:55 - 08:35
DUB
-
SOU
1h 40mdirect
£108Aer Lingus
Tue, 13 Oct - Thu, 29 Oct
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
07:00 - 08:40
DUB
-
SOU
1h 40mdirect
£109Aer Lingus
Sat, 22 Aug - Mon, 24 Aug
Aer Lingus Logo
20:00 - 21:35
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
07:00 - 08:40
DUB
-
SOU
1h 40mdirect
£110Aer Lingus
Wed, 19 Aug - Sat, 22 Aug
Aer Lingus Logo
17:20 - 18:55
SOU
-
DUB
1h 35mdirect
Aer Lingus Logo
17:50 - 19:30
DUB
-
SOU
1h 40mdirect
£110Aer Lingus
Mon, 7 Sep - Sun, 13 Sep
Aer Lingus Logo
09:20 - 11:00
SOU
-
DUB
1h 40mdirect
Aer Lingus Logo
06:55 - 08:35
DUB
-
SOU
1h 40mdirect
£111Aer Lingus
Sat, 22 Aug - Sat, 29 Aug
Multiple Airlines Logo
07:50 - 15:00
SOU
-
DUB
7h 10m
1 stop
Multiple Airlines Logo
17:50 - 19:30
DUB
-
SOU
1h 40mdirect
£113Multiple Airlines
Useful Info

Good to know - Cheap tickets from Portsmouth to Dublin

Low seasonJanuary
Cheapest flight£55
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly (7% 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 1536 reviews
8.4Crew
7.3Food
7.2Entertainment
7.8Boarding
7.7Comfort
Airline reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

8.0 ExcellentAnonymous, Jun 2026
LHR - AMS
Read more KLM reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

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!

The flight was great, the only reason for middle scores on entertainment and food is that it was a short flight so not included (but snacks were served including alcoholic beverages free of charge). I would definitely recommend KLM.

Was trying to change a flight but told that Canadian and local klm systems do not interact so they could not access my booking. Overall I like klm a lot but if it was important to change flights I would be very frustrated.

KLM is my favourite airline. Never ever let us down.Staff are first class.

Pretty bad. Food was awful. drinks were scarce, as if drinking an extra drink would ruin the airline. attendants were not very helpful. likely Dutch "directedness" (I cannot be bothered). Crammed flight. Entertainment in very minimal dosage. Almost all old movies and series with 1-3 episodes only. Very limited number of options available. Jesus!! it seems you need to bring your own entertainment these days even of flights that are 13 hrs long!! I would and I will avoid in the future!

I travel frequently. The flight was late again... KLM should really try and be on time

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

I requested wheel chair assistance , it was confirmed via email that inwoood get it but I didn’t get it . The last leg of my trip to Nigeria was the worst.

Boarding in NCL is really bad. I'm sure part of that is a directive from the airport that KLM can't change but part of that is due to KLM policy. NCL doesn't announce the gate of departure until 30 minutes before departure. However, when you arrive at the gate area, the gate agents file everyone into one long line and everyone boards from one line at one time. This line can stretch for 200m...easily. There is a separate line for groups 1 and 2 but you don't know it until you get to the gate area and agents don't announce/advertise it. Everyone else is grouped into one line. Are you in group 3? Doesn't matter...you board with group 5. Traveling with a child? Tough luck...you're stuck at the end of the line and board last. The last part is very annoying because none of the gates at NCL (with the exception of 1 used by Emirates) has a jetway. To board, you must leave the gate area, walk downstairs, walk onto the tarmac and walk up stairs to board the plane. Highly challenging if you're traveling with small children. That boarding process begs for a concession to allow people with children to board first because they will need extra time. But there is no such policy. Just a really horrible boarding experience all around.

Aer Lingus App never showed the gate and the board did not update until very close to the time the gate was due to close. Both planes departed late but no announcement was made which would have saved a run for the gate.

delayed flight stayed whole night at washington Dallas airport at seats , uncomfortable . i am senior citizen , very tired , worst travel.

Got us to destination alive, albeit a bit late. Luggage was left behind. No live tracking app available (available on some other airlines). Supposedly going to be delivered in next couple of days.

The connection time between the regional flight (from Newcastle) to an international flight (to The States) was too short. To require as second security scan and customs clearance within an hour and 20 mins is not enough time to make the actual connection. We had a final boarding call the minute we walked out of US customs and had to sprint (with two small children) through 20 gates to make it in time before the door closed. The concept is great in theory to clear customs before leaving Europe, but the timing needs to be adjusted. We travel abroad frequently and won’t be using this route again. Thanks.

I had zero issues with the flight. I did have issues with the staff at the airport. We missed out flight due to a delay with another airline. Talking to the staff and trying to get a new flight arranged was challenging. One guy was able to try to help us and got us on a new flight, but other staff was dismissive and clearly let us know it wasn’t their problem. All I kept thinking was… this is why air lingus has such a poor customer service reputation. I will be avoiding this airline in the future.

I liked that I went thru customs in Dublin instead of having to do that in LA.

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.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

The seat pitch was a little tight for me, but I survived. There was a volatile, enraged passenger a couple of rows ahead of me and the cabin crew defused and resolved the situation calmly, quickly, and successfully.

This was the most expensive economy flight per minute of flight time ever. But the quality was lacking. Extremely Aer Lingus rude staff at LHR said that the flight from London to Dublin (Ireland) was “NOT international.” Horrified at the colonial and imperial perspective. Seats were dirty with trash in seat pockets. Airline doesn’t clean or care about hygiene and safety.

I liked almost everything (e.g. ease of booking, price, punctuality, efficiency, friendliness, courtesy). A slam landing in Dublin airport took some of the gloss off it, though. Being able to paste here the text of the review of the same flight that I just wrote for Ryanair would make me feel better about Kayak too.

Take off was great but landing is always with a bump.

Staff were very professional. Much better than the outgoing flight from Dublin. Seat cushions were practically non existent. Making for a very uncomfortable flight.

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

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.

Worst experience ever. First time and last time with Ryanair. I'm not a cow.

Didn’t like anything about it we were delayed by 3 hours and sat on the plane when leaving Dublin. On the way back to Dublin we were kept in the plane on tarmac for 4.5 hours. This airline is a joke!

Delayed flight. Received notice from ryanair by email and via app but no such timely information available at airport from monitors or staff

Ryanair is always shite. Slowest boarding possible in the most uncomfortable way. It’s like they are are tad sadistic.

The boarding process was fast and easy , but the airport sign was not up on the board, so it was hard to know the correct gate , on the airplane there was NO Snacks and NO water …. Everything needs to be purchase …. It’s not worthy for the price we paid !

Waiting area not big enough for all the passengers, no airport lounge.

Really appreciated the care, attention and friendliness of cabin crew. Very comfortable, prompt and efficient flight.

People were nice. Seats are so cramped my knees had to be pressed into the seat in front of me.

Dreadfully long wait for bags at Dublin coming off an already late flight.

Flight was delayed and there was boarding pass and flight information errors resulting in confusion and stress

Aer Lingus was the actual airline so they handled everything professionally.

Excellent service smooth flight f or the most part food was right now.I'm expectedly good.

The flight was delayed, and delayed some more. But there was more room on this plane than the one that flew oversees! There was no food or entertainment, but that’s ok, it’s a short flight

Sitting in the plane for an extended period of time was very hot and uncomfortable. Very late arrival happened to not affect me but many others probably missed their connection because it also took a long time to get to the terminal.

It was truly amazing. I will do it again! Excellent!

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

Information on your arrival and departure airports