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Cheap flights from Southampton to Belfast from £25

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Southampton to Belfast departing on 28/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£52easyJet
Find Deal
Thu, 2 Oct - Thu, 9 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:30 - 11:45BFS-SOU
1h 15mdirect
£64easyJet
Find Deal
Fri, 3 Oct - Fri, 10 Oct
easyJet Logo
11:25 - 22:15SOU-BFS
10h 50m1 stop
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£72easyJet
Find Deal
Thu, 2 Oct - Thu, 9 Oct
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
easyJet Logo
07:00 - 08:15BFS-SOU
1h 15mdirect
£74easyJet
Find Deal
Fri, 5 Sep - Sun, 7 Sep
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
easyJet Logo
07:00 - 08:15BFS-SOU
1h 15mdirect
£75easyJet
Find Deal
Fri, 5 Sep - Sun, 7 Sep
easyJet Logo
08:25 - 08:10SOU-BFS
23h 45m1 stop
easyJet Logo
10:40 - 11:55BFS-SOU
1h 15mdirect
£80easyJet
Find Deal
Sat, 13 Sep - Fri, 26 Sep
easyJet Logo
11:50 - 13:10SOU-BFS
1h 20mdirect
easyJet Logo
13:35 - 14:50BFS-SOU
1h 15mdirect
£81easyJet
Find Deal
Mon, 8 Sep - Sat, 13 Jun
easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
22:05 - 07:55BFS-SOU
9h 50m1 stop
£86easyJet
Find Deal
Thu, 25 Sep - Fri, 26 Sep
Logo
20:30 - 15:20SOU-BFS
18h 50m2 stops
Logo
10:40 - 11:55BFS-SOU
1h 15mdirect
£131
Find Deal
Mon, 22 Sep - Fri, 26 Sep
Logo
11:25 - 22:00SOU-BFS
10h 35m2 stops
Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£133
Find Deal
Thu, 2 Oct - Thu, 9 Oct

easyJet flights from Southampton to Belfast Intl Airport

Our best easyJet deals on Southampton to Belfast Intl Airport flight tickets
easyJet
2 Oct
SOU15:05Southampton Eastleigh
1h 20m
BFS16:25Belfast Intl
9 Oct
BFS13:05Belfast Intl
1h 15m
SOU14:20Southampton Eastleigh
£52
Find similar
easyJet
3 Oct
SOU12:15Southampton Eastleigh
1h 20m
BFS13:35Belfast Intl
10 Oct
BFS10:30Belfast Intl
1h 15m
SOU11:45Southampton Eastleigh
£64
Find similar
easyJet
2 Oct
SOU11:25Southampton Eastleigh
10h 50m
1 stop
BFS22:15Belfast Intl
9 Oct
BFS13:05Belfast Intl
1h 15m
SOU14:20Southampton Eastleigh
£72
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to Belfast Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 19 August 2025.
Use the filters below to find and compare flights from Southampton to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

15:05-16:25

Nonstop1h 20m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£52

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 3/10

12:15-13:35

Nonstop1h 20m

Belfast Intl

Fri 10/10

10:30-11:45

Nonstop1h 15m

£64

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

11:25-22:15

1 stop10h 50m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£72

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/9

12:00-13:20

Nonstop1h 20m

Belfast Intl

Sun 7/9

07:00-08:15

Nonstop1h 15m

£74

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/9

12:00-13:20

Nonstop1h 20m

Belfast Intl

Sun 7/9

07:00-08:15

Nonstop1h 15m

£75

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 13/9

08:25-08:10

1 stop23h 45m

Belfast Intl

Fri 26/9

10:40-11:55

Nonstop1h 15m

£80

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 8/9

11:50-13:10

Nonstop1h 20m

Belfast Intl

Sat 13/6

13:35-14:50

Nonstop1h 15m

£81

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 25/9

15:05-16:25

Nonstop1h 20m

Belfast Intl

Fri 26/9

22:05-07:55

1 stop9h 50m

£86

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 22/9

20:30-15:20

2 stops18h 50m

Belfast Intl

Fri 26/9

10:40-11:55

Nonstop1h 15m

£131

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

11:25-22:00

2 stops10h 35m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£133

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Belfast from

How to get the cheapest flight ticket from Southampton to Belfast Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of January is, on average, the cheapest month to fly to Belfast Intl Airport from Southampton, with most prices found around £70. If you’re not able to fly to Belfast Intl Airport in January, then September is your next best option. Flight prices from Southampton to Belfast Intl Airport during September average around £74.

What is the cheapest day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart from Southampton to Belfast Intl Airport is on a Wednesday when prices can be found for as low as £61. The most expensive day to fly to Belfast Intl Airport is Friday, with ticket prices averaging around £71.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

The cheapest time of day to fly to Belfast Intl Airport is in the morning when flights can be purchased for as low as £84. In the afternoon is when there is more demand to fly to Belfast Intl Airport, so prices are often more expensive at around £107 per ticket.

What is the cheapest Southampton Eastleigh to Belfast Intl flight route?

Fly from Southampton Eastleigh to Belfast Intl for the best Southampton Eastleigh - Belfast Intl flight prices

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

You are more likely to see cheaper flights to Belfast Intl Airport from Southampton when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast Intl Airport for around £93 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast Intl Airport from Southampton for as low as £61 on momondo.

What cabin class options are available on Southampton Eastleigh to Belfast Intl flights?

There are 1 cabin classes available to choose from on Southampton Eastleigh to Belfast Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Southampton to Belfast Intl Airport flight prices changed over time?

As of August 2025, prices for Southampton to Belfast Intl Airport flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from Southampton to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Southampton to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Southampton to Belfast Intl Airport (SOU to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Southampton to Belfast Intl Airport

Best price found

£25

Fastest flight time

1h 20m

Direct flights

Mon, Tue, Fri, Sat and Sun
The best one-way flight to Belfast Intl Airport from Southampton in the past 72 hours is £25. The best return flight deal from Southampton to Belfast Intl Airport found on momondo in the last 72 hours is £52.
The fastest flight from Southampton to Belfast Intl Airport takes 1h 20m
Direct flights go from Southampton to Belfast Intl Airport on Monday, Tuesday, Friday, Saturday and Sunday. Airline offering direct flights is easyJet..
Search flight deals

  • How far is Southampton Eastleigh to Belfast Intl by plane?

    The distance between Southampton Eastleigh and Belfast Intl is about 327.5 mi. Flights usually cover this in 1h 20m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Southampton Eastleigh Airport to Belfast Intl Airport?

    Prices for flights from Southampton Eastleigh Airport to Belfast Intl Airport refresh daily.

  • How many operators does momondo search for flights from Southampton Eastleigh Airport to Belfast Intl Airport?

  • How old do you have to be to fly from Southampton Eastleigh Airport to Belfast Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Southampton Eastleigh Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The travel and health documents you'll need for your trip to Belfast Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Southampton to Belfast Intl Airport?

  • What is the most popular airline from Southampton to Belfast Intl Airport?

Best airlines flying from Southampton to Belfast Intl Airport

Compare and see reviews for airlines that fly from Southampton to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £32Free CancellationRating
6.9
1,820 reviews
Search easyJet flights
Aer LingusPriceFrom £61Free CancellationRating
7.2
1,221 reviews
Search Aer Lingus flights

  • easyJet Flights From Southampton to Belfast Intl Airport

    easyJet flight deals from Southampton to Belfast Intl Airport start from £43 round-trip. Over the 4 easyJet flights for this route in a normal week, average airfare is usually £94 round-trip - but some users have found much cheaper deals with momondo.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Ballymena
Newry
Armagh
Cookstown
Dungannon
Portadown

Why use momondo?

Why should I use momondo to find a flight deal from Southampton to Belfast?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Belfast from Southampton.

Can I find flights from Southampton to Belfast with flexible booking policies on momondo?

Yes. All flights to Belfast from Southampton on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Southampton to Belfast?

Once all potential Southampton to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Southampton to Belfast right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Southampton to Belfast flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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