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Cheap flights from Belfast to London from £29

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 4/10. 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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0 bags

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Cheap return flights

easyJet Logo
10:05 - 11:20BFS-SOU
1h 15mdirect
easyJet Logo
15:20 - 16:40SOU-BFS
1h 20mdirect
£48easyJet
Find Deal
Mon, 6 Oct - Sat, 18 Oct
easyJet Logo
10:30 - 11:45BFS-SOU
1h 15mdirect
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
£68easyJet
Find Deal
Fri, 10 Oct - Sun, 12 Oct
easyJet Logo
10:40 - 11:55BFS-SOU
1h 15mdirect
easyJet Logo
15:20 - 16:40SOU-BFS
1h 20mdirect
£71easyJet
Find Deal
Fri, 26 Sep - Sat, 27 Sep
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
Aer Lingus Logo
08:55 - 10:30SOU-BHD
1h 35mdirect
£77Aer Lingus
Find Deal
Fri, 26 Sep - Tue, 30 Sep
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
Aer Lingus Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
£80Aer Lingus
Find Deal
Fri, 14 Nov - Sun, 16 Nov
Multiple Airlines Logo
08:10 - 08:15BFS-SOU
24h 05m2 stops
Multiple Airlines Logo
15:20 - 16:40SOU-BFS
1h 20mdirect
£130Multiple Airlines
Find Deal
Mon, 6 Oct - Sat, 18 Oct
Multiple Airlines Logo
11:50 - 17:10BHD-SOU
5h 20m1 stop
Multiple Airlines Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
£143Multiple Airlines
Find Deal
Fri, 14 Nov - Sun, 16 Nov
British Airways Logo
10:10 - 11:45BHD-SOU
1h 35mdirect
British Airways Logo
12:15 - 13:50SOU-BHD
1h 35mdirect
£227British Airways
Find Deal
Tue, 3 Mar - Wed, 4 Mar
British Airways Logo
10:10 - 11:45BHD-SOU
1h 35mdirect
British Airways Logo
12:15 - 08:15SOU-BHD
20h 00m2 stops
£300British Airways
Find Deal
Tue, 3 Mar - Wed, 4 Mar
KLM Logo
06:30 - 17:25BHD-SOU
10h 55m1 stop
KLM Logo
08:40 - 16:50SOU-BHD
8h 10m1 stop
£396KLM
Find Deal
Sun, 28 Dec - Tue, 30 Dec

Aer Lingus flights from Belfast to Southampton

Our best Aer Lingus deals on Belfast to Southampton flight tickets
Aer Lingus
26 Sept
BHD06:40Belfast City
1h 45m
SOU08:25Southampton Eastleigh
30 Sept
SOU08:55Southampton Eastleigh
1h 35m
BHD10:30Belfast City
£77
Find similar
Aer Lingus
14 Nov
BHD06:40Belfast City
1h 45m
SOU08:25Southampton Eastleigh
16 Nov
SOU08:55Southampton Eastleigh
1h 40m
BHD10:35Belfast City
£80
Find similar
Aer Lingus
10 Oct
BHD06:40Belfast City
1h 45m
SOU08:25Southampton Eastleigh
12 Oct
SOU08:55Southampton Eastleigh
1h 35m
BHD10:30Belfast City
£81
Find similar

easyJet flights from Belfast to Southampton

Our best easyJet deals on Belfast to Southampton flight tickets
easyJet
6 Oct
BFS10:05Belfast Intl
1h 15m
SOU11:20Southampton Eastleigh
18 Oct
SOU15:20Southampton Eastleigh
1h 20m
BFS16:40Belfast Intl
£48
Find similar
easyJet
10 Oct
BFS10:30Belfast Intl
1h 15m
SOU11:45Southampton Eastleigh
12 Oct
SOU12:00Southampton Eastleigh
1h 20m
BFS13:20Belfast Intl
£68
Find similar
easyJet
25 Sept
BFS13:05Belfast Intl
1h 15m
SOU14:20Southampton Eastleigh
26 Sept
SOU12:25Southampton Eastleigh
1h 20m
BFS13:45Belfast Intl
£70
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 16 September 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

BFS - SOU

BFSSOU

Belfast Intl

Mon 6/10

10:05-11:20

Nonstop1h 15m

Southampton Eastleigh

Sat 18/10

15:20-16:40

Nonstop1h 20m

£48

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 10/10

10:30-11:45

Nonstop1h 15m

Southampton Eastleigh

Sun 12/10

12:00-13:20

Nonstop1h 20m

£68

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 26/9

10:40-11:55

Nonstop1h 15m

Southampton Eastleigh

Sat 27/9

15:20-16:40

Nonstop1h 20m

£71

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 26/9

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Tue 30/9

08:55-10:30

Nonstop1h 35m

£77

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 14/11

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 16/11

08:55-10:35

Nonstop1h 40m

£80

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 6/10

08:10-08:15

2 stops24h 05m

Southampton Eastleigh

Sat 18/10

15:20-16:40

Nonstop1h 20m

£130

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 14/11

11:50-17:10

1 stop5h 20m

Southampton Eastleigh

Sun 16/11

08:55-10:35

Nonstop1h 40m

£143

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

£227

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 3/3

10:10-11:45

Nonstop1h 35m

Southampton Eastleigh

Wed 4/3

12:15-08:15

2 stops20h 00m

£300

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 28/12

06:30-17:25

1 stop10h 55m

Southampton Eastleigh

Tue 30/12

08:40-16:50

1 stop8h 10m

£396

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 £71. 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 £76.

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 £75. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around £137. 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 £110. 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 evening when prices are £154 on average. Flights to Southampton from Belfast in the evening 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 City 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 £100 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 £71 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 15m

Direct flights

Every day

Airports in Southampton

1 airport
The fastest flight from Belfast to Southampton takes 1h 15m
Direct flights go from Belfast to Southampton every day.
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 15m.

  • 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 £39Free CancellationRating
6.9
1,820 reviews
Search easyJet flights
Aer LingusPriceFrom £67Free CancellationRating
7.2
1,274 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.

An easier way to manage your Southampton trip

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