£32 Find Cheap Flights from Portsmouth to Belfast – 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 Belfast departing on 17/9. 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
£70
Typical prices: £155-£82
easyJet
Mon 6/7Sun 26/7
SOU - BFS • Direct
Cheapest one-way flight
£32
Typical prices: £84-£117
Aer Lingus
Thu 17/9
SOU - BHD • Direct
Direct flights
You can fly direct with Ryanair, Aer Lingus, and others. Average duration is 0
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Flight Deals
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Flight Deals

Cheap Flights from Portsmouth to Belfast

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

Mon, 6 Jul - Sun, 26 Jul
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£70easyJet
Fri, 9 Oct - Mon, 12 Oct
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£70easyJet
Tue, 7 Jul - Thu, 6 Aug
Aer Lingus Logo
19:30 - 21:05
SOU
-
BHD
1h 35mdirect
Aer Lingus Logo
10:25 - 12:05
BHD
-
SOU
1h 40mdirect
£72Aer Lingus
Tue, 14 Jul - Wed, 15 Jul
Aer Lingus Logo
08:55 - 10:35
SOU
-
BHD
1h 40mdirect
Aer Lingus Logo
06:40 - 08:25
BHD
-
SOU
1h 45mdirect
£74Aer Lingus
Tue, 14 Jul - Wed, 15 Jul
Aer Lingus Logo
08:55 - 10:35
SOU
-
BHD
1h 40mdirect
Aer Lingus Logo
06:40 - 08:25
BHD
-
SOU
1h 45mdirect
£75Aer Lingus
Mon, 6 Jul - Sun, 26 Jul
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£77easyJet
Mon, 6 Jul - Mon, 13 Jul
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£80easyJet
Thu, 25 Jun - Mon, 29 Jun
Aer Lingus Logo
08:55 - 10:35
SOU
-
BHD
1h 40mdirect
Aer Lingus Logo
06:40 - 08:25
BHD
-
SOU
1h 45mdirect
£81Aer Lingus
Thu, 25 Jun - Mon, 29 Jun
Aer Lingus Logo
08:55 - 10:35
SOU
-
BHD
1h 40mdirect
Aer Lingus Logo
06:40 - 08:25
BHD
-
SOU
1h 45mdirect
£82Aer Lingus
Tue, 14 Jul - Wed, 15 Jul
Aer Lingus Logo
08:55 - 10:35
SOU
-
BHD
1h 40mdirect
Aer Lingus Logo
10:25 - 12:05
BHD
-
SOU
1h 40mdirect
£83Aer Lingus
Useful Info

Good to know - Cheap tickets from Portsmouth to Belfast

Cheapest flight£32
Flight from Southampton to Belfast City Airport

When to book flights from Portsmouth to Belfast

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

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

    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 Belfast.

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

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

    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 Belfast 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 Belfast?

    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 Belfast 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 airlines flying from Portsmouth to Belfast

 
Need help choosing which airline to fly with from Portsmouth to Belfast? 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.
7.3
Aer LingusOverall score based on 1603 reviews
8.1Crew
7.2Comfort
6.7Food
7.0Entertainment
7.4Boarding
Airline reviews

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.

6.0 GoodScott, Jun 2026
MAN - DUB
Read more Aer Lingus reviews

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.

Caring & friendly crew. Most important: got us SAFELY to our destination!

The flights are literally always delayed arriving, boarding and taking off so they are always late for the connection. I planned ahead so I was okay but many others aren't. The food was terrible. The staff was very pleasant. I appreciate boarding back to front.

This was the smoothest flight I've ever taken with any airline, including Aer Lingus. Typically, there are moments when I feel afraid, but from take off (miraculously seamless!) to cruise, to landing this was a perfect flight. Thank you!

The seat area was way too compact. The person in front reclined, and the TV screen was right in my face. There was a metal box secured to the floor in my foot area, further limiting space. Food was OK. The last service was provided too late in the flight, so the crew was rushing at the end. The ticket counter in the Naples airport was extremely slow. The staff on the flight was friendly.

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

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

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

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

Like getting a bus. No great luxury but will get you there

Whole way through - far more professional and slick than I expected

Good news was that Bag Check was open two and a half hours before the flight, which is essential with the chaotic immigration process. Flight was okay, but sitting at the back of the aircraft, 3 overhead bins on both sides were filled with crew bags and other misc items, so we couldn't put our cabin bags anywhere near us. To add insult, twice the crew managed to drop items that they were taking out of the overhead bins onto my wife's head, who was sitting in an aisle seat.

It was good; the only down side is that once you get to the airport everything is self service, there is no one assisting. I felt like I was working while I was on vacation during the check in process and dropping off the luggage. Really uncertain on what the airlines use payroll nowadays.

You need to make signage at Berlin Airport clearer. Having checked in online we had our boarding passes onlour phones. You do not make it clear that you need to check in again to receive a printed luggage tag. You get to baggage drop off and it says you can only do it with a luggage tag BUT not how to get this.

We were bumped despite seats existing on flight While checkin attendants were helpful Easyjet management was not. Only after threats were we allowed on plane at last minute. The online help desk was useless and waste of time (over an hour of useless chats)

It was good except they could offer free water and tea/coffe

Sitting on the last row in between the aisle and a massive person, all people going to the bathroom bumped into me including the flight attendants.

Sat at rear of aircraft and was very cold. As a frequent flyer for many years, this is was the coldest I have ever been. Other passengers and some crew were complaining how cold it was. Sitting near the doors always risks being colder, just the way the aircraft works - but this was exceptional, bring a good jumper. Everything else was pretty standard easyJet - good value low cost carrier.

The best budget airline in Europe. Flight was on time, crew friendly and worked hard during flight and were able to meet our needs. Only downside (not the airline's fault), there were no rear steps.

It was transportation nothing more. I will give a positive rating over Ryanair. We missed our Ryanair flight the night before and received rude and unconcerned treatment from the Ryanair customer service. It was late. We were very tired and stressed after doing our best to get to the airport. The so called customer service ladies were completely unconcerned from the start. Aside from that, the flight to London seemed to be their opportunity for advertising. No time to relax as attendants were constantly in the aisle selling. I will never fly Ryanair again!!

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

Cabin class types available on flights to Portsmouth

Cabin classes available on flights to Portsmouth. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.