SOU - BFS

£26 Find Cheap Flights from Southampton to Belfast Intl Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Southampton to Belfast Intl departing on 26/9. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Belfast, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Southampton to Belfast, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% 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.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Southampton to Belfast Intl (SOU-BFS)

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

Fri, 17 Oct - Sun, 19 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
£63easyJet
Find Deal
Thu, 2 Oct - Mon, 6 Oct
easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
£73easyJet
Find Deal
Thu, 9 Oct - Fri, 10 Oct
easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
10:30 - 11:45BFS-SOU
1h 15mdirect
£80easyJet
Find Deal
Fri, 10 Oct - Mon, 13 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
£84easyJet
Find Deal
Fri, 17 Oct - Mon, 20 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
16:50 - 18:05BFS-SOU
1h 15mdirect
£108easyJet
Find Deal
Fri, 3 Oct - Sun, 5 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
£111easyJet
Find Deal
Fri, 3 Oct - Sun, 5 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
£111easyJet
Find Deal
Mon, 6 Oct - Thu, 9 Oct
Multiple Airlines Logo
20:30 - 15:20SOU-BFS
18h 50m2 stops
Multiple Airlines Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£131Multiple Airlines
Find Deal
Thu, 16 Oct - Thu, 23 Oct
easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£136easyJet
Find Deal
Tue, 30 Sep - Fri, 3 Oct
Multiple Airlines Logo
20:00 - 09:40SOU-BFS
13h 40m2 stops
Multiple Airlines Logo
10:30 - 11:45BFS-SOU
1h 15mdirect
£176Multiple Airlines
Find Deal

Everything you should know

When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 27% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Direct flights
5 days a week
There are direct flights from Southampton to Belfast Intl 5 days a week: Mon, Thu, Fri, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest return fare
£63
Overall average: £86
easyJet
Fri 17/10Sun 19/10
SOU - BFS • Direct
Cheapest one-way flight
£26
Typical prices: £40-55
easyJet
Fri 26/9
SOU - BFS • Direct
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Belfast Intl!
Booking Insights

KAYAK's insights & trends for Southampton to Belfast Intl flights

Get data-powered insights and trends into flights from Southampton to Belfast Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Southampton to Belfast Intl Airport?

The average price of all round-trip flights from Southampton to Belfast Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Belfast Intl Airport on a Sunday and more expensive on a Saturday. On your return trip to Southampton, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

What is the cheapest month to fly from Southampton to Belfast Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Southampton to Belfast Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Southampton to Belfast Intl Airport is January, where tickets cost £70 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £125 and £122 respectively.

How far in advance should I book a flight from Southampton to Belfast Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Southampton to Belfast Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Southampton to Belfast Intl Airport, you should book around 2 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know - Cheap tickets from Southampton to Belfast Intl Airport

Low seasonDecember
Cheapest flight£26
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Southampton to Belfast Intl Airport

When to book flights from Southampton to Belfast Intl

Are your dates flexible? Find out the best times to travel from Southampton to Belfast Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Southampton to Belfast Intl Airport flights

  • What is the cheapest flight from Southampton to Belfast Intl Airport?

    In the last 3 days, the lowest price for a flight from Southampton to Belfast Intl Airport was £36 for a one-way ticket and £86 for a return.

  • Which aircraft models fly most regularly from Southampton to Belfast Intl Airport?

    The ATR 72-201 / 202 is the aircraft model that flies most regularly on the Southampton to Belfast Intl Airport flight route.

  • On which days can I fly direct from Southampton to Belfast Intl Airport?

    You can catch a direct flight from Southampton to Belfast Intl Airport on Monday, Thursday, Friday, Saturday, and Sunday.

  • Which is the best airline for flights from Southampton to Belfast, Aer Lingus or easyJet?

    The two airlines most popular with KAYAK users for flights from Southampton to Belfast are Aer Lingus and easyJet. With an average price for the route of £101 and an overall rating of 7.2, Aer Lingus is the most popular choice. easyJet is also a great choice for the route, with an average price of £72 and an overall rating of 6.9.

  • How does KAYAK find such low prices on flights from Southampton to Belfast Intl Airport?

    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 Southampton to Belfast Intl Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Belfast Intl Airport from Southampton is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Southampton to Belfast Intl Airport?

    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 Intl Airport with an airline and back to Southampton with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southampton to Belfast Intl Airport?

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

KAYAK’s top tips for finding a cheap flight from Southampton to Belfast Intl Airport

  • Looking for a cheap flight from Belfast Intl Airport to Southampton? 25% of our users found flights on this route for £26 or less one-way and £84 or less round-trip.

Prefer to fly direct from Southampton to Belfast Intl Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Southampton Eastleigh to Belfast Intl.
Find which airlines fly direct from Southampton Eastleigh Airport to Belfast Intl Airport, which days they fly and book direct flights.

Direct departures

Southampton Eastleigh to Belfast Intl

Monday

easyJet

easyJet

Thursday

easyJet

easyJet

Friday

easyJet

easyJet

Saturday

easyJet

easyJet

Sunday

easyJet

easyJet

See more direct flights

Direct returns

Belfast Intl to Southampton Eastleigh

Monday

easyJet

easyJet

Thursday

easyJet

easyJet

Friday

easyJet

easyJet

Saturday

easyJet

easyJet

Sunday

easyJet

easyJet

See more direct flights

Reviews of the top airlines flying from Southampton to Belfast Intl

 
See real verified KAYAK customer reviews for airlines flying from Southampton to Belfast. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Southampton to Belfast Intl? 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.
7.2
Aer LingusOverall score based on 1277 reviews
7.3Boarding
7.1Comfort
8.0Crew
6.9Entertainment
6.5Food
Airline reviews

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.

6.0 GoodAnonymous, Sept 2025LHR - DUB
Read more Aer Lingus reviews

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.

Very good except for the boarding process which was more hectic than it should have been

My flights with Aer Lingus were very good and I will definitely fly with them. Again in future trips to Ireland and Scotland.

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

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.

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

The space between seats has reduced even further making it extremely uncomfortable. Couldn't even open the tray table properly or got compressed the moment the front guy reclined.

First -the flight was late - more than two hours Second, not even a bottle of water at bord to give for free for this inconvenience. Three-at landing ive realised that I've lost one of my ear plug headphones and been very desperate to find it with my torch, the crew not helped at all more than that they asked to leave the plane as everyone did before me. This was the last flight from that day- extra 5 min for me with a bit of help from crew - would have bring a super review. I guess this days humanity disappeared!

I got caught using a stolen credit card number. Michelle Siziba is my name Nice to London Gatwick on 7/31/25.

Not happy with price of luggage or that we had no choice but to pay whether cabin or hold. I didn't book seats but this is unnecessary extra money along with suitcase

We accidentally purchased twice the bags we needed. Our fault, but the ticket was not clear to us, and it asked us to purchase bags at checkin. When we notified them to get credit back at the airport, they said to contact customer service. We flew the flight and then contracted customer service. They said no credits after the flight has flown. Not customer service oriented at all. They know we didn’t check that many bags and kept our money for a service they did not provide. Be aware and very careful of what you are purchasing from them because they will not make it right if there is an error.

sadly in Basel & Naples- no jetway we had to climb up and down stairs with our max size carry-on luggage, which was not fun!!!

This was our first time using them. I gave okay ratings for food and entertainment because it was minimal or not provided so I couldn't judge, but much better than most budget carriers we have ever used.

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?

Everything you need to know for your flight from Southampton to Belfast Intl

Information on your arrival and departure airports

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