BFS - SOU

£39 Find Cheap Flights from Belfast Intl Airport to Southampton

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Southampton departing on 5/10. 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 Southampton

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

Save 27% 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 Belfast Intl to Southampton (BFS-SOU)

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

Sun, 5 Oct - Sun, 12 Oct
easyJet Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
£39easyJet
Find Deal
Sat, 4 Oct - Sat, 11 Oct
easyJet Logo
13:35 - 14:50BFS-SOU
1h 15mdirect
easyJet Logo
15:20 - 16:40SOU-BFS
1h 20mdirect
£49easyJet
Find Deal
Sun, 7 Sep - Mon, 8 Sep
easyJet Logo
07:00 - 08:15BFS-SOU
1h 15mdirect
easyJet Logo
11:50 - 13:10SOU-BFS
1h 20mdirect
£65easyJet
Find Deal
Sat, 4 Oct - Sat, 11 Oct
easyJet Logo
13:35 - 14:50BFS-SOU
1h 15mdirect
easyJet Logo
08:25 - 09:10SOU-BFS
24h 45m1 stop
£87easyJet
Find Deal
Mon, 15 Sep - Wed, 17 Sep
easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
easyJet Logo
09:00 - 16:10SOU-BFS
7h 10m1 stop
£89easyJet
Find Deal
Thu, 2 Oct - Fri, 17 Oct
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
£89easyJet
Find Deal
Sun, 7 Sep - Mon, 8 Sep
easyJet Logo
07:00 - 08:15BFS-SOU
1h 15mdirect
easyJet Logo
11:05 - 23:05SOU-BFS
12h 00m1 stop
£124easyJet
Find Deal
Fri, 5 Dec - Wed, 17 Dec
easyJet Logo
21:10 - 13:10BFS-SOU
16h 00m1 stop
easyJet Logo
09:25 - 19:55SOU-BFS
10h 30m1 stop
£138easyJet
Find Deal
Sun, 5 Oct - Sun, 12 Oct
 Logo
10:10 - 11:25BFS-SOU
1h 15mdirect
 Logo
20:00 - 09:45SOU-BFS
13h 45m2 stops
Mon, 15 Sep - Wed, 17 Sep
 Logo
22:00 - 11:45BFS-SOU
13h 45m1 stop
 Logo
09:00 - 09:00SOU-BFS
24h 00m2 stops
Booking Insights

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

Get data-powered insights and trends into flights from Belfast Intl to Southampton 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 Belfast Intl Airport to Southampton?

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

When flying from Belfast Intl Airport to Southampton, you should consider leaving on a Thursday and avoid Fridays if you are looking for the best rates. For your return to Belfast Intl Airport, you’ll find the best rates on Mondays and the most expensive ones on Tuesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport to Southampton, 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 Belfast Intl Airport to Southampton is March, where tickets cost £71 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £148 and £144 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Belfast Intl Airport to Southampton, 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 Belfast Intl Airport to Southampton, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

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

Low seasonMarch
Cheapest flight£39
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (45% more expensive on average)
Flight from Belfast Intl Airport to Southampton

When to book flights from Belfast Intl to Southampton

Are your dates flexible? Find out the best times to travel from Belfast Intl to Southampton 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 Belfast Intl Airport to Southampton flights

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

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Southampton was £60 for a one-way ticket and £53 for a return.

  • Which airports will I be using when flying from Belfast Intl Airport to Southampton?

    On your way to Southampton, you’ll fly out from Belfast Intl. You’ll be landing at Southampton Eastleigh.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Belfast to Southampton are Aer Lingus and easyJet. With an average price for the route of £116 and an overall rating of 7.1, Aer Lingus is the most popular choice. easyJet is also a great choice for the route, with an average price of £102 and an overall rating of 6.9.

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

    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 Belfast Intl Airport to Southampton.

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

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

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

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

    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 Southampton from Belfast Intl Airport 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 Belfast Intl Airport to Southampton

  • Looking for a cheap flight from Southampton to Belfast Intl Airport? 25% of our users found flights on this route for £50 or less one-way and £76 or less round-trip.

Prefer to fly direct from Belfast Intl Airport to Southampton?

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

Direct departures

Belfast Intl to Southampton Eastleigh

Monday

easyJet

easyJet

Thursday

easyJet

easyJet

Friday

easyJet

easyJet

Saturday

easyJet

easyJet

Sunday

easyJet

easyJet

See more direct flights

Direct returns

Southampton Eastleigh to Belfast Intl

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 Belfast Intl to Southampton

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Southampton. 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 Belfast Intl to Southampton? 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.
7.1
Aer LingusOverall score based on 1228 reviews
6.5Food
7.3Boarding
7.1Comfort
6.9Entertainment
8.0Crew
Airline reviews

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

8.0 ExcellentAnonymous, Aug 2025LYS - DUB
Read more Aer Lingus reviews

A little late, but an overall pleasant flight. Staff pleasent hand helpful, a great start to our holiday.

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

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

We had a long delay leaving IOM. No food or drunk service as it is a short flight. Shuttled by bus from terminal to plane with packed in conditions on bus.

Overall it was good experience and it was my first trip with Aer Lingus. One thing I was embarrassed was that someone occupied my seat so I was asked to use another seat. Due to this unhappy happening I almost missed the connecting flight because the random seat was far from the flight door. Food was fine, I liked the macaroni and cheese with fresh bread.

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.

The seat pitch was a little tight for me, but I survived. There was a volatile, enraged passenger a couple of rows ahead of me and the cabin crew defused and resolved the situation calmly, quickly, and successfully.

My experience with Aer Lingus was nice, and I would be happy to fly with them again. However, my seat pocket had not been cleaned and had dirty wipes in it. I have flown with Aer Lingus before and do not recall anything like that happening, so presumably this was a one-off kind of thing. For the meal, I asked if there was possibly one without my allergens and the flight attendant gave me the one she thought would be fine. She did not know what allergens were in it, but when I received the meal the allergens were all listed right on the top of the package, so I was confused about why she didn’t know how to check what they were. In future, I will see if it’s possible to request an allergen-free meal ahead of time. But overall, I had a pleasant experience. My experience with Underpricer was very unenjoyable and because of them I do not plan to book through Kayak in the future. I have used Kayak numerous times, but this booking experience was so unpleasant. They called me numerous times and also emailed me to try to get me to select a seat. However, when I had a question later on, I was kept on hold for 20/30 minutes before I finally hung up. I also emailed them but never received a response, which I did not appreciate, especially given their previous frequent calls when they wanted something from me.

Everything went well. I made my connection which is always a concern.

I had an awful experience at the ticketing agent stand. I had purchased three tickets, one of which I had the maiden name of a passenger on the ticket. They refused to help, assist, and actually delayed our process and had us miss an opportunity to purchase a ticket on the same flight. I was sent through multiple phone calls, none of which helped, and the person at the counter was the person who told me to both call Aer Lingus for help and was the person who said they could not fulfill my request that they were privy to from the beginning. My partner is still stuck in Scotland, racking up thousands of dollars in additional fees and tickets. I am very upset and two of my tickets went unused. I will never be using Aer Lingus ever again and I will continue to complain about them.

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?

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.

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

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.