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Find cheap flights from Ireland to Portsmouth from £49

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 29/8. 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
0 bags
Sun 23/6
Sun 30/6

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Good to know - Cheap tickets from Ireland to Portsmouth

Low season

January

High season

June

Cheapest flight

£49
Best time to beat the crowds (50% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Dublin to Southampton

FAQs - booking Portsmouth flights

  • How long is the flight to Portsmouth?

    Flights from Dublin1h 42m
  • How to fly to Portsmouth?

    You cannot fly directly to Portsmouth. KAYAK recommends you fly to Southampton Eastleigh (SOU) (14.67 miles 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) (14.67 mi). Other nearby airports are Bournemouth (BOH) (32.95 mi), London Gatwick (LGW) (45.91 mi), London Heathrow (LHR) (52.65 mi) or London All airports (LON) (63.13 mi). KAYAK recommends you fly to Southampton Eastleigh.

  • How far is Southampton from central Southampton?

    The city centre of Southampton is 3 miles from Southampton.

  • What is the name of Southampton’s airport?

    There is only 1 airport in Southampton, called Southampton (SOU). It can also be referred to 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.

See more FAQs

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 Heathrow Airport, however you can also fly to Gatwick airport, London City airport, Luton airport, Stansted airport or Southend airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Portsmouth flight deals.

Top airlines flying from Ireland 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.
8.0
Eastern AirwaysOverall score based on 14 reviews
7.5Food
8.0Boarding
8.2Comfort
9.0Crew
6.7Entertainment
Airline reviews

The flight was excellent and we appreciate that they ran the flight even though only 9 of us were on board!

10.0 ExcellentAnonymous, Aug 2023SOU - ORY
Read more about Eastern Airways reviews

The flight was excellent and we appreciate that they ran the flight even though only 9 of us were on board!

Excellent round trip from London Gatwick to Newquay Cornwall! Personable staff and crew, bags made it, flights on time. For me it was 5 stars.

For a small aircraft the choice of food and drinks was excellent compared to other ATR 72 operators. Checked in baggage as standard means easy boarding and disembarking for all.

I shall never book a budget airline flight ever again. Saturday morning flight to Belfast cancelled, rescheduled for following day, arriving 25 minutes before scheduled departure flight. I made the mistake of buying a non-flexible, non-refundable ticket options were so much more expensive. Alternative options offered by KAYAK did not come close in any way to my original booking; My first and last attempt to book a flight through Kayak.

Every flight on this airline is delayed, generally upto 2 hours for an internal flight. Very poor and absolute logistical disaster.

I fly to the USA every 6wks on Ave and 99% of the time I fly Aer Lingus. If I fly BA I’m always disappointed. My only criticism is the food. I’m vegan and over the last year it’s got slightly better these last couple of flights but on the whole it’s not good! Salad and fruit salad for breakfast and that’s also the starter and desert for the lunch/dinner and the main is usually rice with fried veg 😳the pasta is pretty good though. That’s been the last 2 meals…. Everything else is fantastic.

The flight was half full and I presume that the next few days are even less busy not sure why they are still charging a premium to change a flight.

Short flight so not much to rate. Surprised I had to pay for a soda.

the room on the plane was good but that is because flight not sold the other three seat and I had room. the food in terrible.

First the price I paid was excellent, my flight was full, but my seat was roomy. The one downside to the experience was they had games on the entertainment console. The guy behind me poked at my head about half the flight. I hope they get rid of this feature.

Very good need to offer better choice of food for business

They should. Heck planes more often not when they are suppose to be leaving causing delays

Crew was fantastic got lovely food and plenty of water. Entertainment was good. Never had to ask for anything. Left on time and got to Seattle early. Luggage did not take long either.

Always find Aer Lingus reliable and good value for money. Food on this flight was pretty basic and the headphone Jack at my seat only worked for one ear. Little disappointed in movie selection, limited on recent releases. Staff are okay - but I always buy a cheap ticket so not like I expect first class opulence anyway!!!

Boarding was so quick, flight was ahead of time which is great and the pilot spoke clearly and was letting people know everything, amazing, love travelling with you 😊

Book cheap flights from Ireland to Portsmouth

Recent return flight deals

27/9Fri
directAer Lingus
1h 50mDUB-SOU
28/9Sat
directAer Lingus
1h 35mSOU-DUB
£93
27/9Fri
2 stops
9h 05mDUB-SOU
28/9Sat
direct
1h 35mSOU-DUB
£127
3/6Mon
1 stop
7h 30mDUB-SOU
5/6Wed
1 stop
12h 25mSOU-DUB
£138
10/8Sat
directAer Lingus
1h 50mDUB-SOU
11/8Sun
directAer Lingus
1h 40mSOU-DUB
£160
21/6Fri
1 stopKLM
10h 35mDUB-SOU
28/6Fri
1 stopKLM
5h 05mSOU-DUB
£166
5/10Sat
1 stopKLM
5h 40mDUB-SOU
6/10Sun
1 stopKLM
10h 50mSOU-DUB
£177
5/10Sat
directBritish Airways
1h 35mDUB-SOU
6/10Sun
directBritish Airways
1h 35mSOU-DUB
£230
5/10Sat
directBritish Airways
1h 50mDUB-SOU
6/10Sun
directBritish Airways
1h 35mSOU-DUB
£230
6/6Thu
1 stopBlue Islands
17h 15mDUB-SOU
13/6Thu
1 stopBlue Islands
19h 05mSOU-DUB
£491
21/6Fri
1 stopBlue Islands
3h 20mDUB-SOU
28/6Fri
1 stopBlue Islands
6h 35mSOU-DUB
£541

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Recent one-way flight deals

29/8Thu
directAer Lingus
1h 40mDUB-SOU
£49
23/8Fri
directAer Lingus
1h 50mDUB-SOU
£57
23/8Fri
1 stopKLM
11h 10mDUB-SOU
£92
23/6Sun
2 stops
26h 05mDUB-SOU
£95
29/6Sat
2 stops
28h 10mDUB-SOU
£99
23/6Sun
1 stopKLM
10h 35mDUB-SOU
£100
7/11Thu
directBritish Airways
1h 40mDUB-SOU
£102
7/6Fri
directBritish Airways
1h 50mDUB-SOU
£105
17/6Mon
1 stopBlue Islands
16h 05mDUB-SOU
£226
10/6Mon
1 stopBlue Islands
3h 20mDUB-SOU
£227

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Last minute flights to Portsmouth

Last minute flight, train and bus deals

29/5Wed
directBritish Airways
1h 50mDUB-SOU
29/5Wed
directBritish Airways
1h 35mSOU-DUB
£288
29/5Wed
directBritish Airways
1h 50mDUB-SOU
1/6Sat
directBritish Airways
1h 35mSOU-DUB
£296
29/5Wed
directBritish Airways
1h 50mDUB-SOU
2/6Sun
directBritish Airways
1h 35mSOU-DUB
£305
29/5Wed
directBritish Airways
1h 50mDUB-SOU
1/6Sat
multi-stopBritish Airways
8h 25mSOU-DUB
£410
29/5Wed
multi-stopBritish Airways
5h 05mDUB-SOU
31/5Fri
directBritish Airways
1h 35mSOU-DUB
£415
29/5Wed
multi-stopBritish Airways
5h 05mDUB-SOU
30/5Thu
directBritish Airways
1h 35mSOU-DUB
£416
29/5Wed
multi-stopBritish Airways
5h 05mDUB-SOU
1/6Sat
directBritish Airways
1h 35mSOU-DUB
£425
29/5Wed
multi-stopBritish Airways
5h 05mDUB-SOU
2/6Sun
directBritish Airways
1h 35mSOU-DUB
£433
29/5Wed
multi-stopBritish Airways
7h 20mDUB-SOU
31/5Fri
directBritish Airways
1h 35mSOU-DUB
£598
29/5Wed
multi-stopBritish Airways
17h 10mDUB-SOU
31/5Fri
multi-stopBritish Airways
19h 20mSOU-DUB
£703

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Flights to Portsmouth

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The most searched flights to Portsmouth by KAYAK users.