SOU - BFS

£45 Find Cheap Flights from Southampton to Belfast Intl Airport – 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 Southampton to Belfast Intl departing on 22/8. 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
£85
Typical prices: £92-£176
easyJet
Sat 15/8Mon 17/8
SOU - BFS • Direct
Cheapest one-way flight
£45
Typical prices: £26-£87
easyJet
Sat 22/8
SOU - BFS • 1 stop
Direct flights
Mon, Fri, Sat, Sun
You can fly direct with easyJet. Average duration is 1h 15m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
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+1
Good to know
Good to know
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Belfast Intl!
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

Sat, 15 Aug - Mon, 17 Aug
easyJet Logo
12:15 - 13:30
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£85easyJet
Sat, 15 Aug - Mon, 17 Aug
easyJet Logo
12:15 - 13:30
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£86easyJet
Sun, 30 Aug - Wed, 2 Sep
easyJet Logo
12:35 - 13:50
SOU
-
BFS
1h 15mdirect
easyJet Logo
17:40 - 11:05
BFS
-
SOU
17h 25m
1 stop
£86easyJet
Sun, 16 Aug - Sun, 23 Aug
easyJet Logo
12:35 - 13:50
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£88easyJet
Mon, 20 Jul - Mon, 27 Jul
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£98easyJet
Fri, 14 Aug - Fri, 21 Aug
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£98easyJet
Mon, 27 Jul - Mon, 10 Aug
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£101easyJet
Sun, 16 Aug - Sun, 23 Aug
easyJet Logo
12:35 - 13:50
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£102easyJet
Mon, 27 Jul - Mon, 3 Aug
easyJet Logo
12:25 - 13:40
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£104easyJet
Fri, 17 Jul - Mon, 20 Jul
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£107easyJet
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.

How much is a return flight from Southampton to Belfast Intl Airport?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Southampton to Belfast Intl Airport departing in August.

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 Saturday and more expensive on a Wednesday. On your return trip to Southampton, you should consider flying back on a Sunday, 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 September, where tickets cost £89 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is £162 and £158 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 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

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

Low seasonJanuary
Cheapest flight£45
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly and prices are also 26% 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

  • How many flights are there between Southampton and Belfast Intl Airport per day?

    There is a maximum of 1 direct flight a day that takes off from Southampton and lands in Belfast Intl Airport, with an average flight time of 1h 15m. The most common departure time is 12:00 and most flights take off in the morning. Each week, there are 4 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 £45 for a one-way ticket and £85 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, 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 £128 and an overall rating of 7.3, Aer Lingus is the most popular choice. easyJet is also a great choice for the route, with an average price of £87 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 £67 or less one-way.

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

Friday

easyJet

easyJet

Saturday

easyJet

easyJet

Sunday

easyJet

easyJet

See more direct flights

Direct returns

Belfast Intl to Southampton Eastleigh

Monday

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.
7.3
Aer LingusOverall score based on 1638 reviews
7.4Boarding
7.2Comfort
8.1Crew
6.6Food
7.0Entertainment
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.

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

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

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.

I was pleasantly surprised and enjoyed the services of the airline since flying is not my favorite thing. My goal was to be with my brother's family in Manchester after his death. All staff was helpful, the food appreciated since I selected an overnight flight. Every aspect of the experience was comforting. I plan to return to Manchester in order to attend my brother's funeral in October and hope that I am able to find a reasonable priced flight. Thank you

Baggage fees are deceptive! When I booked this flight, I purchased two tickets and had indicated that I wanted one checked bag. That increased the ticket price by about $100 PER TICKET!. When we went to check in, I was told that I could only check ONE bag, even though I had purchased TWO tickets. I had to pay an additional $50 each way for my wife’s bag. In my opinion, I paid twice for her bag.

As four hour wait with no explanation as to why the delay Very unacceptable

There was no useful information given regarding the flight back to the UK from Tenerife. This despite the week publicised problems around the EES system and the delays caused to boarding. This aspect of the customer experience could have been much better.

Fast boarding, smooth takeoff and landing. plenty of space in seats. Excellent air-conditioning on a hot day. Perfect experience

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!!

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.

Be sure to check bags for 23 kg,.(50 lbs) Coming from US I chose the wrong size luggage weight when I checked in on my phone, and had to pay more when I dropped it off

The on board air steward really made the journey. He was very entertaining

I was disappointed there was a 40 minute delay to flight

The trip itself was good. I have given only good as rating, because my first flight has been cancelled by a different airline and that caused disruption in my trip. I spent over ten hours in Luton airport and that caused me high tiredness, sickness, because of the very early initial trip. easyJet staff has been professional and friendly.

3 hours delayed Don’t understand why when you have paid for ‘speedy boarding’ they call you forward to then make you stand fir another 20 minutes in a confined space before boarding the plane.

Delayed and ketone runway. Was told some nonsense about thunderstorms slowing down flights. Why not just come out and tell customers NATO and BRITISH FORCES were doing defence exercises and were in control of AIR SPACE.

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