What is the cheapest airline that flies from Belfast Intl to Southampton Eastleigh?

easyJet is the most popular carrier operating from Belfast Intl to Southampton Eastleigh

Which airlines fly to Southampton?

easyJet, British Airways and Aer Lingus are the top three most popular airlines that fly to Southampton from Belfast Intl Airport according to our data. easyJet is the first choice among our users, with 55% of people opting to fly with this airline when travelling to Southampton. Keep in mind that there are 3 different airlines that fly to Southampton on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Belfast Intl Airport to Southampton Eastleigh Airport are refreshed on a daily basis.

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

What documentation or ID do you need to fly to Southampton Eastleigh Airport?

The necessary travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£15 Cheap Flights from Belfast Intl Airport to Southampton in 2026

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Find the cheapest flights from Belfast Intl Airport to London

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

13:45 - 19:20

BFS

SOU

5h 35m

1 stop

12:35 - 13:50

SOU

BFS

1h 15mdirect

£170Multiple Airlines

Sat, 25 Apr - Sun, 26 Apr

11:45 - 17:10

BFS

SOU

5h 25m

1 stop

18:20 - 07:45

SOU

BFS

13h 25m

1 stop

£176easyJet

Fri, 6 Mar - Sun, 8 Mar

12:45 - 16:45

BFS

SOU

4h 00m

1 stop

17:15 - 22:00

SOU

BFS

4h 45m

1 stop

£199Multiple Airlines

Sat, 21 Mar - Sat, 28 Mar

14:30 - 08:45

BFS

SOU

18h 15m

2 stops

19:55 - 16:15

SOU

BFS

20h 20m

2 stops

£208Multiple Airlines

Fri, 27 Feb - Mon, 2 Mar

07:20 - 08:45

BFS

SOU

25h 25m

2 stops

17:15 - 22:00

SOU

BFS

4h 45m

1 stop

£210Multiple Airlines

Sat, 21 Mar - Sat, 28 Mar

07:55 - 13:10

BFS

SOU

5h 15m

1 stop

15:25 - 06:45

SOU

BFS

15h 20m

2 stops

£222Multiple Airlines

Sat, 28 Feb - Sat, 28 Feb

10:35 - 17:10

BFS

SOU

6h 35m

1 stop

17:45 - 07:55

SOU

BFS

14h 10m

1 stop

£224easyJet

Fri, 27 Feb - Mon, 2 Mar

05:45 - 08:45

BFS

SOU

27h 00m

2 stops

09:30 - 22:00

SOU

BFS

12h 30m

2 stops

£228Multiple Airlines

Sat, 21 Mar - Sat, 28 Mar

10:35 - 11:50

BFS

SOU

1h 15mdirect

12:35 - 13:50

SOU

BFS

1h 15mdirect

£238easyJet

Fri, 26 Jun - Sun, 28 Jun

10:50 - 12:05

BFS

SOU

1h 15mdirect

12:35 - 13:50

SOU

BFS

1h 15mdirect

£241easyJet

Sun, 5 Jul - Sun, 12 Jul

easyJet flights from Belfast Intl Airport to Southampton

Our best easyJet deals on Belfast Intl Airport to Southampton flight tickets

easyJet

16 Mar

BFS20:50Belfast Intl

12h 00m

1 stop

SOU08:50Southampton Eastleigh

18 Mar

SOU09:25Southampton Eastleigh

3h 20m

1 stop

BFS12:45Belfast Intl

£145

easyJet

4 Mar

BFS20:40Belfast Intl

20h 40m

1 stop

SOU17:20Southampton Eastleigh

11 Mar

SOU09:25Southampton Eastleigh

3h 20m

1 stop

BFS12:45Belfast Intl

£149

easyJet

13 Mar

BFS10:35Belfast Intl

6h 35m

1 stop

SOU17:10Southampton Eastleigh

16 Mar

SOU17:45Southampton Eastleigh

14h 10m

1 stop

BFS07:55Belfast Intl

£159

momondo Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 25/4

13:45-19:20

1 stop5h 35m

Southampton Eastleigh

Sun 26/4

12:35-13:50

Nonstop1h 15m

£170

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 6/3

11:45-17:10

1 stop5h 25m

Southampton Eastleigh

Sun 8/3

18:20-07:45

1 stop13h 25m

£176

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 21/3

12:45-16:45

1 stop4h 00m

Southampton Eastleigh

Sat 28/3

17:15-22:00

1 stop4h 45m

£199

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 27/2

14:30-08:45

2 stops18h 15m

Southampton Eastleigh

Mon 2/3

19:55-16:15

2 stops20h 20m

£208

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 21/3

07:20-08:45

2 stops25h 25m

Southampton Eastleigh

Sat 28/3

17:15-22:00

1 stop4h 45m

£210

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 28/2

07:55-13:10

1 stop5h 15m

Southampton Eastleigh

Sat 28/2

15:25-06:45

2 stops15h 20m

£222

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 27/2

10:35-17:10

1 stop6h 35m

Southampton Eastleigh

Mon 2/3

17:45-07:55

1 stop14h 10m

£224

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 21/3

05:45-08:45

2 stops27h 00m

Southampton Eastleigh

Sat 28/3

09:30-22:00

2 stops12h 30m

£228

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 26/6

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Sun 28/6

12:35-13:50

Nonstop1h 15m

£238

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 5/7

10:50-12:05

Nonstop1h 15m

Southampton Eastleigh

Sun 12/7

12:35-13:50

Nonstop1h 15m

£241

Flights are sorted by cheapest return flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to Southampton?

The month of March is, on average, the cheapest month to fly to Southampton from Belfast Intl Airport, with most prices found around £72. If you’re not able to fly to Southampton in March, then April is your next best option. Flight prices from Belfast Intl Airport to Southampton during April average around £87.

What is the cheapest day to depart on your flight to Southampton?

Our data shows that Thursday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £82. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £106. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southampton.

What is the cheapest time of day to depart on your flight to Southampton?

According to our data, the cheapest time of day to fly to Southampton is at midday. momondo users have found flights departing from Belfast Intl Airport to Southampton at midday for as low as £119. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £136 on average. Flights to Southampton from Belfast Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

How far in advance should I book a flight to Southampton?

You are more likely to see cheaper flights to Southampton from Belfast Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southampton for around £119 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southampton from Belfast Intl Airport for as low as £70 on momondo.

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

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

Can stopping save me money on Belfast Intl Airport to Southampton flights?

No. A direct flight is the cheapest option for a flight between Belfast Intl Airport to Southampton.

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

As of February 2026, prices for Belfast Intl Airport to Southampton flights are approximately 79% more expensive when compared to flights at the same time last year.

When to book flights from Belfast Intl Airport to Southampton

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

Estimated return price

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

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

Best price found	£77
Fastest flight time	1h 15m
Direct flights	Mon, Sat and Sun
Airports in Southampton	1 airport

The best flight deal from Belfast Intl Airport to Southampton found on momondo in the last 72 hours is £77

The fastest flight from Belfast Intl Airport to Southampton takes 1h 15m

Direct flights go from Belfast Intl Airport to Southampton on Monday, Saturday and Sunday. Airline offering direct flights is easyJet..

There is 1 airport in Southampton. From Belfast Intl Airport there are direct flights to Southampton Eastleigh (SOU).

Search flight deals

How far is Belfast Intl to Southampton Eastleigh by plane?
Southampton Eastleigh is 327.5 mi away from Belfast Intl. 1h 15m is a normal flight duration for this route.
When did momondo last update prices for flights from Belfast Intl Airport to Southampton Eastleigh Airport?
Prices for flights from Belfast Intl Airport to Southampton Eastleigh Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Belfast Intl Airport to Southampton Eastleigh Airport?
The number of operators available for flights from Belfast Intl Airport to Southampton Eastleigh Airport is 2 as of February 2026.
How old do you have to be to fly from Belfast Intl Airport to Southampton Eastleigh 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 Belfast Intl Airport to Southampton Eastleigh Airport.
What documentation or ID do you need to fly to Southampton Eastleigh Airport?
The necessary travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Belfast Intl Airport to Southampton?
Based on momondo bookings for flights between Belfast Intl Airport and Southampton, the leading plane model is ATR 72-201 / 202, making up 58.14% of the total bookings. Other popular models include Airbus A320-100/200 with 23.26%, Airbus A319 with 11.63%, and Boeing 737-800 Passenger/BBJ2 (winglets) with 2.33%.
What is the most popular airline from Belfast Intl Airport to Southampton?
Based on momondo bookings for flights between Belfast Intl Airport and Southampton, the leading airline is Aer Lingus, making up 68% of the total bookings. Other popular airlines include easyJet with 32%.

Best airlines flying from Belfast Intl Airport to Southampton

Compare and see reviews for airlines that fly from Belfast Intl Airport to Southampton with momondo

Airline	Rating	Free Cancellation	Price
easyJet	PriceFrom £25	Free Cancellation	Rating 6.9 1,868 reviews		Search easyJet flights
Aer Lingus	PriceFrom £75	Free Cancellation	Rating 7.2 1,445 reviews		Search Aer Lingus flights

Portsmouth

Why use momondo?

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

Finding the right flight to Southampton from Belfast is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Southampton quick and easy, saving you time and money.

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

Flights from Belfast to Southampton with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Southampton from Belfast. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Belfast to Southampton now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Southampton and let you know when they change.

An easier way to manage your Southampton trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Cheap flights from Belfast Intl Airport to London from £35

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to London departing on 29/3. 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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Big names, great deals

Filter for what you want

Filter for what you want

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Trusted and free

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Find the cheapest flights from Belfast Intl Airport to London

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easyJet flights from Belfast Intl Airport to Southampton

Our best easyJet deals on Belfast Intl Airport to Southampton flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Belfast Intl Airport to Southampton that are best for you.

See travel insights to London from

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

What is the cheapest month to fly to Southampton?

What is the cheapest day to depart on your flight to Southampton?

What is the cheapest time of day to depart on your flight to Southampton?

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

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

How far in advance should I book a flight to Southampton?

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

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

Can stopping save me money on Belfast Intl Airport to Southampton flights?

No. A direct flight is the cheapest option for a flight between Belfast Intl Airport to Southampton.

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

As of February 2026, prices for Belfast Intl Airport to Southampton flights are approximately 79% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Belfast Intl to Southampton Eastleigh?

easyJet is the most popular carrier operating from Belfast Intl to Southampton Eastleigh

Which airlines fly to Southampton?

When to book flights from Belfast Intl Airport to Southampton

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

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

Best price found

Fastest flight time

Direct flights

Airports in Southampton

How far is Belfast Intl to Southampton Eastleigh by plane?

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

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

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

What documentation or ID do you need to fly to Southampton Eastleigh Airport?

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

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

Best airlines flying from Belfast Intl Airport to Southampton

Compare and see reviews for airlines that fly from Belfast Intl Airport to Southampton with momondo

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your Southampton trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Airports servicing England

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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