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Cheap flights from Southampton to Belfast from £21

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 9/5. 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

Enter your travel dates to find the best prices.
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£71easyJet
Fri, 10 Apr - Sun, 12 Apr
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:35 - 11:50
BFS
-
SOU
1h 15mdirect
£74easyJet
Fri, 24 Apr - Mon, 27 Apr
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
easyJet Logo
08:15 - 11:25
BFS
-
SOU
3h 10m1 stop
£86easyJet
Thu, 8 Jan - Mon, 12 Jan
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
easyJet Logo
08:15 - 11:25
BFS
-
SOU
3h 10m1 stop
£90easyJet
Thu, 8 Jan - Mon, 12 Jan
easyJet Logo
09:20 - 17:00
SOU
-
BFS
7h 40m1 stop
easyJet Logo
07:55 - 13:10
BFS
-
SOU
5h 15m1 stop
£96easyJet
Tue, 3 Mar - Sat, 7 Mar
easyJet Logo
18:20 - 07:45
SOU
-
BFS
13h 25m1 stop
easyJet Logo
20:40 - 17:20
BFS
-
SOU
20h 40m1 stop
£103easyJet
Sun, 18 Jan - Wed, 21 Jan
easyJet Logo
12:05 - 20:20
SOU
-
BFS
8h 15m1 stop
easyJet Logo
20:40 - 17:20
BFS
-
SOU
20h 40m1 stop
£109easyJet
Mon, 19 Jan - Wed, 21 Jan
easyJet Logo
09:20 - 17:00
SOU
-
BFS
7h 40m1 stop
easyJet Logo
11:45 - 17:10
BFS
-
SOU
5h 25m1 stop
£129easyJet
Tue, 3 Mar - Fri, 6 Mar
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
10:50 - 12:05
BFS
-
SOU
1h 15mdirect
£133easyJet
Fri, 29 May - Sun, 31 May
easyJet Logo
12:20 - 13:35
SOU
-
BFS
1h 15mdirect
easyJet Logo
21:25 - 12:25
BFS
-
SOU
15h 00m1 stop
£144easyJet
Fri, 29 May - Sun, 31 May

easyJet flights from Southampton to Belfast Intl Airport

Our best easyJet deals on Southampton to Belfast Intl Airport flight tickets
easyJet
10 Apr
SOU12:20Southampton Eastleigh
1h 15m
BFS13:35Belfast Intl
12 Apr
BFS10:50Belfast Intl
1h 15m
SOU12:05Southampton Eastleigh
£71
Find similar
easyJet
24 Apr
SOU12:20Southampton Eastleigh
1h 15m
BFS13:35Belfast Intl
27 Apr
BFS10:35Belfast Intl
1h 15m
SOU11:50Southampton Eastleigh
£74
Find similar
easyJet
8 Jan
SOU17:55Southampton Eastleigh
25h 40m
1 stop
BFS19:35Belfast Intl
12 Jan
BFS08:15Belfast Intl
3h 10m
1 stop
SOU11:25Southampton Eastleigh
£86
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 10 December 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

Fri 10/4

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 12/4

10:50-12:05

Nonstop1h 15m

£71

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 24/4

12:20-13:35

Nonstop1h 15m

Belfast Intl

Mon 27/4

10:35-11:50

Nonstop1h 15m

£74

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 8/1

17:55-19:35

1 stop25h 40m

Belfast Intl

Mon 12/1

08:15-11:25

1 stop3h 10m

£86

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 8/1

17:55-19:35

1 stop25h 40m

Belfast Intl

Mon 12/1

08:15-11:25

1 stop3h 10m

£90

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Tue 3/3

09:20-17:00

1 stop7h 40m

Belfast Intl

Sat 7/3

07:55-13:10

1 stop5h 15m

£96

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sun 18/1

18:20-07:45

1 stop13h 25m

Belfast Intl

Wed 21/1

20:40-17:20

1 stop20h 40m

£103

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 19/1

12:05-20:20

1 stop8h 15m

Belfast Intl

Wed 21/1

20:40-17:20

1 stop20h 40m

£109

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Tue 3/3

09:20-17:00

1 stop7h 40m

Belfast Intl

Fri 6/3

11:45-17:10

1 stop5h 25m

£129

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 29/5

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 31/5

10:50-12:05

Nonstop1h 15m

£133

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 29/5

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 31/5

21:25-12:25

1 stop15h 00m

£144

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 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 £73. If you’re not able to fly to Belfast Intl Airport in January, then February is your next best option. Flight prices from Southampton to Belfast Intl Airport during February 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 Tuesday when prices can be found for as low as £62. The most expensive day to fly to Belfast Intl Airport is Friday, with ticket prices averaging around £74.

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 £88. At midday 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 £103 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 £73 on momondo.

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

There is only 1 cabin class 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 December 2025, prices for Southampton to Belfast Intl Airport flights are approximately 177% more expensive 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

£46

Fastest flight time

1h 15m

Direct flights

Tue, Sat and Sun
The best flight deal from Southampton to Belfast Intl Airport found on momondo in the last 72 hours is £46
The fastest flight from Southampton to Belfast Intl Airport takes 1h 15m
Direct flights go from Southampton to Belfast Intl Airport on Tuesday, 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 15m, 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 £35Free CancellationRating
6.9
1,850 reviews
Search easyJet flights
Aer LingusPriceFrom £63Free CancellationRating
7.2
1,391 reviews
Search Aer Lingus flights

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.

An easier way to manage your Belfast Intl Airport trip

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