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Cheap flights from Belfast to London from £52

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 to London departing on 13/11. 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

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Aer Lingus Logo
10:10 - 11:50BHD-SOU
1h 40mdirect
Aer Lingus Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
£93Aer Lingus
Find Deal
Mon, 8 Dec - Tue, 9 Dec
Aer Lingus Logo
13:40 - 15:15BHD-SOU
1h 35mdirect
Aer Lingus Logo
19:00 - 20:35SOU-BHD
1h 35mdirect
£105Aer Lingus
Find Deal
Sat, 7 Feb - Sun, 15 Feb
easyJet Logo
08:15 - 11:25BFS-SOU
3h 10m1 stop
easyJet Logo
09:20 - 17:00SOU-BFS
7h 40m1 stop
£115easyJet
Find Deal
Mon, 8 Dec - Tue, 9 Dec
easyJet Logo
07:00 - 13:10BFS-SOU
6h 10m1 stop
easyJet Logo
18:20 - 17:00SOU-BFS
22h 40m1 stop
£125easyJet
Find Deal
Sat, 7 Feb - Sun, 15 Feb
Multiple Airlines Logo
16:55 - 08:50BHD-SOU
15h 55m2 stops
Multiple Airlines Logo
19:00 - 20:35SOU-BHD
1h 35mdirect
£136Multiple Airlines
Find Deal
Mon, 8 Dec - Tue, 9 Dec
Multiple Airlines Logo
16:55 - 08:50BHD-SOU
15h 55m2 stops
Multiple Airlines Logo
19:00 - 20:35SOU-BHD
1h 35mdirect
£137Multiple Airlines
Find Deal
Mon, 8 Dec - Tue, 9 Dec
KLM Logo
06:30 - 08:10BHD-SOU
25h 40m1 stop
KLM Logo
09:25 - 21:00SOU-BHD
11h 35m1 stop
£185KLM
Find Deal
Mon, 22 Dec - Sat, 3 Jan
British Airways Logo
10:10 - 11:45BHD-SOU
1h 35mdirect
British Airways Logo
12:15 - 13:50SOU-BHD
1h 35mdirect
£228British Airways
Find Deal
Tue, 3 Mar - Wed, 4 Mar
British Airways Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
British Airways Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
£229British Airways
Find Deal
Tue, 3 Mar - Wed, 4 Mar
KLM Logo
17:20 - 17:15BHD-SOU
23h 55m1 stop
KLM Logo
17:45 - 16:50SOU-BHD
23h 05m1 stop
£252KLM
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Sat, 7 Feb - Sun, 15 Feb

Aer Lingus flights from Belfast to Southampton

Our best Aer Lingus deals on Belfast to Southampton flight tickets
Aer Lingus
8 Dec
BHD10:10Belfast City
1h 40m
SOU11:50Southampton Eastleigh
9 Dec
SOU08:55Southampton Eastleigh
1h 40m
BHD10:35Belfast City
£93
Find similar
Aer Lingus
7 Feb
BHD13:40Belfast City
1h 35m
SOU15:15Southampton Eastleigh
15 Feb
SOU19:00Southampton Eastleigh
1h 35m
BHD20:35Belfast City
£105
Find similar
Aer Lingus
16 Mar
BHD10:10Belfast City
1h 40m
SOU11:50Southampton Eastleigh
17 Mar
SOU12:15Southampton Eastleigh
1h 35m
BHD13:50Belfast City
£126
Find similar

easyJet flights from Belfast to Southampton

Our best easyJet deals on Belfast to Southampton flight tickets
easyJet
8 Dec
BFS08:15Belfast Intl
3h 10m
1 stop
SOU11:25Southampton Eastleigh
9 Dec
SOU09:20Southampton Eastleigh
7h 40m
1 stop
BFS17:00Belfast Intl
£115
Find similar
easyJet
7 Feb
BFS07:00Belfast Intl
6h 10m
1 stop
SOU13:10Southampton Eastleigh
15 Feb
SOU18:20Southampton Eastleigh
22h 40m
1 stop
BFS17:00Belfast Intl
£125
Find similar
easyJet
16 Mar
BFS08:15Belfast Intl
9h 00m
1 stop
SOU17:15Southampton Eastleigh
17 Mar
SOU09:20Southampton Eastleigh
7h 40m
1 stop
BFS17:00Belfast Intl
£151
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Belfast 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 31 October 2025.
Use the filters below to find and compare flights from Belfast to Southampton that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 8/12

10:10-11:50

Nonstop1h 40m

Southampton Eastleigh

Tue 9/12

08:55-10:35

Nonstop1h 40m

£93

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 7/2

13:40-15:15

Nonstop1h 35m

Southampton Eastleigh

Sun 15/2

19:00-20:35

Nonstop1h 35m

£105

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 8/12

08:15-11:25

1 stop3h 10m

Southampton Eastleigh

Tue 9/12

09:20-17:00

1 stop7h 40m

£115

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 7/2

07:00-13:10

1 stop6h 10m

Southampton Eastleigh

Sun 15/2

18:20-17:00

1 stop22h 40m

£125

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 8/12

16:55-08:50

2 stops15h 55m

Southampton Eastleigh

Tue 9/12

19:00-20:35

Nonstop1h 35m

£136

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 8/12

16:55-08:50

2 stops15h 55m

Southampton Eastleigh

Tue 9/12

19:00-20:35

Nonstop1h 35m

£137

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 22/12

06:30-08:10

1 stop25h 40m

Southampton Eastleigh

Sat 3/1

09:25-21:00

1 stop11h 35m

£185

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 3/3

10:10-11:45

Nonstop1h 35m

Southampton Eastleigh

Wed 4/3

12:15-13:50

Nonstop1h 35m

£228

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 3/3

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Wed 4/3

08:55-10:35

Nonstop1h 40m

£229

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 7/2

17:20-17:15

1 stop23h 55m

Southampton Eastleigh

Sun 15/2

17:45-16:50

1 stop23h 05m

£252

Flights are sorted by cheapest return flights first.

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

How to get the cheapest flight ticket from Belfast 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, with most prices found around £73. If you’re not able to fly to Southampton in March, then January is your next best option. Flight prices from Belfast to Southampton during January average around £83.

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 £77. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £141. 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 in the morning. momondo users have found flights departing from Belfast to Southampton in the morning for as low as £121. 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 £127 on average. Flights to Southampton from Belfast in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Belfast to Southampton Eastleigh flight route?

Fly from Belfast Intl to Southampton Eastleigh for the best Belfast - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Southampton for around £113 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 for as low as £73 on momondo.

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

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

Cheap Belfast to Southampton flight deals and tips

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

Fastest flight time

1h 35m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Southampton

1 airport
The fastest flight from Belfast to Southampton takes 1h 35m
Direct flights go from Belfast to Southampton on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. There are no airlines offering direct flights..
There is 1 airport near Southampton: Southampton Eastleigh (SOU)
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  • How far is Belfast to Southampton Eastleigh by plane?

    The distance between Belfast and Southampton Eastleigh is about 317.1 mi. In terms of flight time, this usually takes a little over 1h 35m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast to Southampton Eastleigh Airport.

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

    The required travel and health documents for your Southampton Eastleigh Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Southampton Eastleigh Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Belfast to Southampton

Compare and see reviews for airlines that fly from Belfast to Southampton with momondo
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £38Free CancellationRating
6.9
1,840 reviews
Search easyJet flights
Aer LingusPriceFrom £72Free CancellationRating
7.2
1,365 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?

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 Southampton from Belfast.

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

momondo does allow users to show only those flights to Southampton from Belfast which offer a flexible booking policy as well as other useful filters and features.

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 simply researching potential flights to Southampton, momondo offers a useful price alert feature which will track prices for flights to Southampton from Belfast and alert you when they change.

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