BFS - SOU

£20 Find Cheap Flights from Belfast Intl Airport to Southampton

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Southampton departing on 27/4. 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

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
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Everything you should know

Cheapest return fare
£41
Overall average: £112
easyJet
Sat 2/5Sat 9/5
BFS - SOU • Direct
Cheapest one-way flight
£20
Typical prices: £58-£110
easyJet
Mon 27/4
BFS - SOU • Direct
When to travel
March
Cheapest • 40% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 Southampton!
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

Sat, 2 May - Sat, 9 May
easyJet Logo
10:30 - 11:45
BFS
-
SOU
1h 15mdirect
easyJet Logo
12:15 - 13:30
SOU
-
BFS
1h 15mdirect
£41easyJet
Sat, 2 May - Sat, 9 May
easyJet Logo
10:30 - 11:45
BFS
-
SOU
1h 15mdirect
easyJet Logo
07:50 - 21:50
SOU
-
BFS
14h 00m1 stop
£92easyJet
Thu, 15 Jan - Sun, 18 Jan
easyJet Logo
13:35 - 17:20
BFS
-
SOU
3h 45m1 stop
easyJet Logo
18:20 - 07:45
SOU
-
BFS
13h 25m1 stop
£112easyJet
Fri, 19 Dec - Thu, 1 Jan
easyJet Logo
10:35 - 17:10
BFS
-
SOU
6h 35m1 stop
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
£121easyJet
Fri, 19 Dec - Thu, 1 Jan
easyJet Logo
10:35 - 17:10
BFS
-
SOU
6h 35m1 stop
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
£124easyJet
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
18:35 - 13:45
BFS
-
SOU
19h 10m2 stops
Multiple Airlines Logo
18:20 - 07:45
SOU
-
BFS
13h 25m1 stop
£126Multiple Airlines
Sat, 2 May - Sat, 9 May
easyJet Logo
22:25 - 17:50
BFS
-
SOU
19h 25m1 stop
easyJet Logo
07:50 - 21:50
SOU
-
BFS
14h 00m1 stop
£141easyJet
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
18:35 - 13:45
BFS
-
SOU
19h 10m2 stops
Multiple Airlines Logo
18:20 - 09:45
SOU
-
BFS
15h 25m2 stops
£158Multiple Airlines
Tue, 23 Dec - Thu, 1 Jan
easyJet Logo
12:30 - 08:50
BFS
-
SOU
20h 20m1 stop
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
£159easyJet
Fri, 19 Dec - Thu, 1 Jan
Multiple Airlines Logo
05:45 - 13:45
BFS
-
SOU
8h 00m1 stop
Multiple Airlines Logo
20:10 - 10:30
SOU
-
BFS
14h 20m2 stops
£169Multiple Airlines
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 Wednesday 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 Sundays 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 £73 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £166 and £161 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£20
Best time to beat the crowds (39% less expensive on average)
Most popular time to fly (38% 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 £20 for a one-way ticket and £41 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.

  • 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 £130 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 £115 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.

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.
7.2
Aer LingusOverall score based on 1384 reviews
6.6Food
7.1Comfort
8.0Crew
6.9Entertainment
7.4Boarding
Airline reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

10.0 ExcellentPAULINA, Nov 2025
DUB - LAS
Read more Aer Lingus reviews

Seats are small, but comfortable and more space around you, so for a normal person the seats are perfect. If you are a big and fat individual, I would not think the seats are comfortable. All else was good and normal. Lots of movies to watch.

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

This flight left about 45 minutes late, and arrived about 45 minutes late, which was enough to make us miss our next flight and trap us in Dublin for 24 hours!!

I think the extra charges for seating with no added advantage and the added charges for baggage are excessive compared to other airlines.

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.

We left 2 1/2 hours late. It wasn't the airlines fault but they did nothing to help the situation. Even water had a price tag. The next flight was better.

I liked that I went thru customs in Dublin instead of having to do that in LA.

I was so grateful for the kindness of the crew. They made a long trip very pleasant. Food was delicious. Many movie options

My flight from Dublin was delayed two hours which ment that I missed my connecting flight to Phoenix. American Airlines provided a hotel room and rebooked my flight for 7:30 AM the next day. I didn't get to the room until 11 pm and I had to be at the airport the next day by 5 AM. The airlines did their best but the schedule was challenging for an 81 year old.

The food and so are to expensive and old . Crew whas not very friendly . Apparently some other passenger can just Push through the waiting people to board while almost punching me and a father with a child down the stairs. Its always something with easy jet . The seats of row 26 where lose . And for a guy of my size there is absolutely no leg room at all .

Nice to fly out of Orly smaller easier to navigate airport. Being able to receive boarding pass well in advance of trip was comforting to know all travel was in order.

Liked. The check-in was pretty quick as they had 5 desks working.

Generally a good experience except for boarding in Naples on the flight back to London. We were all standing around for at least 20 minutes maybe longer as there was no seating.

Seats, WC,sizes for today's generation adults, and if technical problems arise a complimentary coffee, water nice for waiting one hours, the rest is perfect (pilot and cabin crew)

Boarding was smooth and quick. Flight departed on time. Equally evacuation upon landing was from both the front door and the back doors. Bags were on the conveyor belts before I got there. Excellent service.

The terminals are far away, be prepared to walk. Also, You climb stairs to the plane since there are no aero bridges. Boarding was haphazard not in multiple groups, so stand in line early. Hard to find place to stow cabin baggage if you are behind in the line. You can purchase food on the plane. There are vegetarian options.

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

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

Information on your arrival and departure airports