Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Belfast Intl Airport to London from £19

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 27/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Belfast Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
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
£91easyJet
Sat, 2 May - Sat, 9 May
easyJet Logo
13:35 - 17:20
BFS
-
SOU
3h 45m1 stop
easyJet Logo
18:20 - 07:45
SOU
-
BFS
13h 25m1 stop
£112easyJet
Thu, 15 Jan - Sun, 18 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
Fri, 19 Dec - Thu, 1 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
£125Multiple Airlines
Thu, 15 Jan - Sun, 18 Jan
easyJet Logo
11:30 - 17:45
BFS
-
SOU
6h 15m1 stop
easyJet Logo
18:20 - 07:45
SOU
-
BFS
13h 25m1 stop
£135easyJet
Sun, 18 Jan - Sun, 25 Jan
easyJet Logo
22:25 - 17:50
BFS
-
SOU
19h 25m1 stop
easyJet Logo
07:50 - 21:50
SOU
-
BFS
14h 00m1 stop
£140easyJet
Sat, 2 May - Sat, 9 May
Multiple Airlines Logo
18:35 - 13:45
BFS
-
SOU
19h 10m2 stops
Multiple Airlines Logo
18:20 - 09:45
SOU
-
BFS
15h 25m2 stops
£157Multiple Airlines
Thu, 15 Jan - Sun, 18 Jan
easyJet Logo
12:30 - 08:50
BFS
-
SOU
20h 20m1 stop
easyJet Logo
17:55 - 19:35
SOU
-
BFS
25h 40m1 stop
£158easyJet
Tue, 23 Dec - Thu, 1 Jan

easyJet flights from Belfast Intl Airport to Southampton

Our best easyJet deals on Belfast Intl Airport to Southampton flight tickets
easyJet
2 May
BFS10:30Belfast Intl
1h 15m
SOU11:45Southampton Eastleigh
9 May
SOU12:15Southampton Eastleigh
1h 15m
BFS13:30Belfast Intl
£41
Find similar
easyJet
2 May
BFS10:30Belfast Intl
1h 15m
SOU11:45Southampton Eastleigh
9 May
SOU07:50Southampton Eastleigh
14h 00m
1 stop
BFS21:50Belfast Intl
£91
Find similar
easyJet
15 Jan
BFS13:35Belfast Intl
3h 45m
1 stop
SOU17:20Southampton Eastleigh
18 Jan
SOU18:20Southampton Eastleigh
13h 25m
1 stop
BFS07:45Belfast Intl
£112
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Belfast Intl Airport to Southampton 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 5 December 2025.
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 2/5

10:30-11:45

Nonstop1h 15m

Southampton Eastleigh

Sat 9/5

12:15-13:30

Nonstop1h 15m

£41

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 2/5

10:30-11:45

Nonstop1h 15m

Southampton Eastleigh

Sat 9/5

07:50-21:50

1 stop14h 00m

£91

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 15/1

13:35-17:20

1 stop3h 45m

Southampton Eastleigh

Sun 18/1

18:20-07:45

1 stop13h 25m

£112

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 19/12

10:35-17:10

1 stop6h 35m

Southampton Eastleigh

Thu 1/1

17:55-19:35

1 stop25h 40m

£121

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 19/12

10:35-17:10

1 stop6h 35m

Southampton Eastleigh

Thu 1/1

17:55-19:35

1 stop25h 40m

£124

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 15/1

18:35-13:45

2 stops19h 10m

Southampton Eastleigh

Sun 18/1

18:20-07:45

1 stop13h 25m

£125

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 18/1

11:30-17:45

1 stop6h 15m

Southampton Eastleigh

Sun 25/1

18:20-07:45

1 stop13h 25m

£135

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 2/5

22:25-17:50

1 stop19h 25m

Southampton Eastleigh

Sat 9/5

07:50-21:50

1 stop14h 00m

£140

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 15/1

18:35-13:45

2 stops19h 10m

Southampton Eastleigh

Sun 18/1

18:20-09:45

2 stops15h 25m

£157

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 23/12

12:30-08:50

1 stop20h 20m

Southampton Eastleigh

Thu 1/1

17:55-19:35

1 stop25h 40m

£158

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

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

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 £73. 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 £89.

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

Our data shows that Sunday is the least expensive day to fly to Southampton. Tickets to fly out on this day can be as low as £76. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £144. 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 £123. 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 £133 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 £72 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 December 2025, prices for Belfast Intl Airport to Southampton flights are approximately 20% 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

Fastest flight time

1h 15m

Direct flights

Tue, Sat and Sun

Airports in Southampton

1 airport
The fastest flight from Belfast Intl Airport to Southampton takes 1h 15m
Direct flights go from Belfast Intl Airport to Southampton on Tuesday, Saturday and Sunday. There are no airlines offering direct flights..
There is 1 airport near Southampton: 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £38Free CancellationRating
6.9
1,848 reviews
Search easyJet flights
Aer LingusPriceFrom £75Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/1
Sun 11/1
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom