£34 Find Cheap Flights from Portsmouth to Belfast

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 8/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Belfast

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 26% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Cheap Flight Deals 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.

Recent return flight deals from Portsmouth to Belfast

KAYAK's recommended return flight deals from the most popular airlines that fly from Portsmouth to Belfast.
Discover the best prices for you by selecting your travel dates on KAYAK.
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
£46easyJet
Find Deal
Fri, 13 Jun - Mon, 16 Jun
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
£48easyJet
Find Deal
Fri, 13 Jun - Mon, 16 Jun
Aer Lingus Logo
08:55 - 10:30SOU-BHD
1h 35mdirect
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£82Aer Lingus
Find Deal
Fri, 16 May - Mon, 23 Jun
Aer Lingus Logo
08:55 - 10:30SOU-BHD
1h 35mdirect
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£88Aer Lingus
Find Deal
Sun, 18 May - Thu, 22 May
 Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
 Logo
07:00 - 19:55BFS-SOU
12h 55m2 stops
Fri, 13 Jun - Mon, 16 Jun
 Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
 Logo
07:00 - 19:55BFS-SOU
12h 55m2 stops
Fri, 13 Jun - Mon, 16 Jun
KLM Logo
09:20 - 21:15SOU-BHD
11h 55m1 stop
KLM Logo
06:30 - 17:50BHD-SOU
11h 20m1 stop
£239KLM
Find Deal
Thu, 24 Jul - Tue, 29 Jul
British Airways Logo
16:45 - 18:20SOU-BHD
1h 35mdirect
British Airways Logo
11:00 - 12:40BHD-SOU
1h 40mdirect
£278British Airways
Find Deal
Sat, 24 May - Sun, 25 May
British Airways Logo
16:45 - 18:20SOU-BHD
1h 35mdirect
British Airways Logo
07:30 - 08:10BHD-SOU
24h 40m1 stop
£400British Airways
Find Deal
Fri, 20 Jun - Sun, 22 Jun
KLM Logo
17:35 - 21:15SOU-BHD
3h 40m1 stop
KLM Logo
08:30 - 17:50BHD-SOU
9h 20m1 stop
£444KLM
Find Deal
Fri, 20 Jun - Sun, 22 Jun
Useful Info

Good to know - Cheap tickets from Portsmouth to Belfast

Cheapest flight

£34
Flight from Southampton to Belfast Intl 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.

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.
7.0
Aer LingusOverall score based on 1076 reviews
6.7Entertainment
7.2Boarding
7.9Crew
6.4Food
7.0Comfort
Airline reviews

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

2.0 MediocreAnonymous, Apr 2025MAN - DUB
Read more Aer Lingus reviews

I believe it was short flight in plane I understand not that much compared to other airlines but weighting for checkin was too long need extra person for checkin or Atleast someone to let the customer knows don’t worry someone will be here shortly.

Seats were alarming close to the row in front of you. I didn’t do the measurements online, which I’m sure they’re available, but it seemed much tighter than other planes, but the airplane itself was well maintained and looked fairly new. My only complaint on the staff was that we’re on an international flight. Normally they give you wine with dinner and the flight attendant decided to pull some strict restrictions and wouldn’t give more than one glass of wine per person, and you could not share with your spouse, which seemed ridiculous when we have four people on the plane with us and only one person ordered wine asked for a second one and she said oh absolutely not. It’s only one per person Which on a transcontinental usually is not the case. They’re very attentive on making sure everyone is as comfortable as possible.

Boarding seemed a bit chaotic and we had to walk outside across the tarmac. Passengers of all ages had to drag carry on luggage up the outside stairway into the aircraft. There was no WiFi. Very uncomfortable crammed seats. Glad in-air time was only an hour!

Booked through Kayak, couldnt take flight, Kayak punted to Orbiz, Orbiz punted to Aer Lingus, Aer Lingus said sorry about your luck, try Kayak/Orbiz. Terrible customer service collecting air fares and not even offering a voucher when customers cant take flight

There was no flight. I booked a flight from Toronto to Bordeaux with a stopover in Dublin. I arrived in Dublin and the flight number I had didn't exist and the flight going to Bordeaux I wasn't on. I had to book a new flight with a different airline for later in the day and pay out of pocket.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

This flight was delayed and caused me to miss my connecting flight from New York to Boston. I had to rent a car and drive myself home to avoid waiting another 5 hours in the airport.

Flight was cancelled. There were no Aer Lingus reps to help. I had to rebook my flight and find a hotel. Still had nothing from the airline.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

We were charged a ridiculous amount for a name spelling error on ticket which I would’ve corrected if I received pre-check info more than 1/2hr before flight. Then we were told at ticket counter that our bags were fine for boarding but then we’re charged another ridiculous amount to take in our luggage despite being told differently. Flight itself was great. Charges were unfair.

Apart from an email about re configuring passenger seating less than 24hrs before flying it was all good.

There were a lot (4 I think) of EasyJet flights leaving Agadir, we arrived two and a half ours before our flight. Very slow to get through the booking in, passport control and security!! We had booked in on line but had to Queue with others who had not to drop our bags off!,

We boarded and then sat on the tarmac for an hour….probably not E Jets fault. But the gentleman that checked us in and took our luggage was exceptionally friendly and calming for early morning/ confused passengers. As always, it’s the people that make or break an experience, right?

I was hesitant to book with a low cost airline due to previous experience but Easy Jet surpassed my expectations. I would definitely book a flight with them again! Seemless booking, upfront about baggage fees, professional, and helpful staff.

Kayak sent several notifications that the flight was late. This contradicted the information on the airport boards. This was extremely confusing and we very nearly missed the flight purely because we double checked with the info desk when the flight stays said’closed’. Kayak notifications are therefore unreliable and pointlesa

Usual issues with flight delay. Perennial problem of travel by plane.

i didnt go this was a hacker booked this flight on my debit card !

Delayed almost 2 hours sitting on plane. No updates at all from flight deck and virtually no updates from cabin crew

Long delay resulted in my being unable to catch a train home and resulted in an additional £76 cost for an Uber

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.

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.