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Cheap flights from Southampton to Belfast from £25

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 28/8. 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

easyJet Logo
15:05 - 16:25SOU-BFS
1h 20mdirect
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£52easyJet
Find Deal
Thu, 2 Oct - Thu, 9 Oct
easyJet Logo
12:15 - 13:35SOU-BFS
1h 20mdirect
easyJet Logo
10:30 - 11:45BFS-SOU
1h 15mdirect
£64easyJet
Find Deal
Fri, 3 Oct - Fri, 10 Oct
easyJet Logo
11:25 - 22:15SOU-BFS
10h 50m1 stop
easyJet Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£72easyJet
Find Deal
Thu, 2 Oct - Thu, 9 Oct
easyJet Logo
12:00 - 13:20SOU-BFS
1h 20mdirect
easyJet Logo
07:00 - 08:15BFS-SOU
1h 15mdirect
£74easyJet
Find Deal
Fri, 5 Sep - Sun, 7 Sep
Aer Lingus Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£89Aer Lingus
Find Deal
Sat, 1 Nov - Sat, 8 Nov
Aer Lingus Logo
15:45 - 17:20SOU-BHD
1h 35mdirect
Aer Lingus Logo
06:40 - 08:25BHD-SOU
1h 45mdirect
£92Aer Lingus
Find Deal
Thu, 25 Sep - Fri, 26 Sep
Logo
20:30 - 15:20SOU-BFS
18h 50m2 stops
Logo
10:40 - 11:55BFS-SOU
1h 15mdirect
£131
Find Deal
Mon, 22 Sep - Fri, 26 Sep
Logo
11:25 - 22:00SOU-BFS
10h 35m2 stops
Logo
13:05 - 14:20BFS-SOU
1h 15mdirect
£133
Find Deal
Thu, 2 Oct - Thu, 9 Oct
KLM Logo
09:25 - 16:50SOU-BHD
7h 25m1 stop
KLM Logo
17:20 - 08:50BHD-SOU
15h 30m1 stop
£218KLM
Find Deal
Sat, 1 Nov - Sat, 8 Nov
British Airways Logo
08:55 - 10:35SOU-BHD
1h 40mdirect
British Airways Logo
14:40 - 16:15BHD-SOU
1h 35mdirect
£227British Airways
Find Deal
Sat, 1 Nov - Fri, 7 Nov

easyJet flights from Southampton to Belfast

Our best easyJet deals on Southampton to Belfast flight tickets
easyJet
2 Oct
SOU15:05Southampton Eastleigh
1h 20m
BFS16:25Belfast Intl
9 Oct
BFS13:05Belfast Intl
1h 15m
SOU14:20Southampton Eastleigh
£52
Find similar
easyJet
3 Oct
SOU12:15Southampton Eastleigh
1h 20m
BFS13:35Belfast Intl
10 Oct
BFS10:30Belfast Intl
1h 15m
SOU11:45Southampton Eastleigh
£64
Find similar
easyJet
2 Oct
SOU11:25Southampton Eastleigh
10h 50m
1 stop
BFS22:15Belfast Intl
9 Oct
BFS13:05Belfast Intl
1h 15m
SOU14:20Southampton Eastleigh
£72
Find similar

Aer Lingus flights from Southampton to Belfast

Our best Aer Lingus deals on Southampton to Belfast flight tickets
Aer Lingus
1 Nov
SOU08:55Southampton Eastleigh
1h 40m
BHD10:35Belfast City
8 Nov
BHD06:40Belfast City
1h 45m
SOU08:25Southampton Eastleigh
£89
Find similar
Aer Lingus
25 Sept
SOU15:45Southampton Eastleigh
1h 35m
BHD17:20Belfast City
26 Sept
BHD06:40Belfast City
1h 45m
SOU08:25Southampton Eastleigh
£92
Find similar
Aer Lingus
1 Nov
SOU08:55Southampton Eastleigh
1h 40m
BHD10:35Belfast City
5 Nov
BHD14:40Belfast City
1h 35m
SOU16:15Southampton Eastleigh
£94
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Southampton to Belfast 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 19 August 2025.
Use the filters below to find and compare flights from Southampton to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

15:05-16:25

Nonstop1h 20m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£52

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 3/10

12:15-13:35

Nonstop1h 20m

Belfast Intl

Fri 10/10

10:30-11:45

Nonstop1h 15m

£64

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

11:25-22:15

1 stop10h 50m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£72

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 5/9

12:00-13:20

Nonstop1h 20m

Belfast Intl

Sun 7/9

07:00-08:15

Nonstop1h 15m

£74

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 1/11

08:55-10:35

Nonstop1h 40m

Belfast City

Sat 8/11

06:40-08:25

Nonstop1h 45m

£89

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Thu 25/9

15:45-17:20

Nonstop1h 35m

Belfast City

Fri 26/9

06:40-08:25

Nonstop1h 45m

£92

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 22/9

20:30-15:20

2 stops18h 50m

Belfast Intl

Fri 26/9

10:40-11:55

Nonstop1h 15m

£131

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 2/10

11:25-22:00

2 stops10h 35m

Belfast Intl

Thu 9/10

13:05-14:20

Nonstop1h 15m

£133

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 1/11

09:25-16:50

1 stop7h 25m

Belfast City

Sat 8/11

17:20-08:50

1 stop15h 30m

£218

SouthamptonBelfast

SOU - BHD

SOUBHD

Southampton Eastleigh

Sat 1/11

08:55-10:35

Nonstop1h 40m

Belfast City

Fri 7/11

14:40-16:15

Nonstop1h 35m

£227

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 Belfast from

How to get the cheapest flight ticket from Southampton to Belfast

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?

The cheapest month to fly to Belfast from Southampton is in January. Flight prices, which tend to average around £70, are often lower during this time because this is during the off-season. If you aren’t able to travel to Belfast during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of £74.

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

The cheapest day to depart on your flight to Belfast is on a Wednesday when prices can be found for as low as £61. This is often the case because there is less demand to fly during this day of the week. Flights from Southampton to Belfast on a Friday will generally be more expensive and average around £71. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

The cheapest time of day to fly to Belfast is in the morning when flights can be purchased for as low as £84. Flights to Belfast are more costly in the afternoon, with an average ticket price of £107. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Southampton Eastleigh to Belfast flight route?

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

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

You are more likely to see cheaper flights to Belfast from Southampton when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast for around £93 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast from Southampton for as low as £61 on momondo.

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

There are 2 cabin classes available to choose from on Southampton Eastleigh to Belfast flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Southampton to Belfast flight deals and tips

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

Best price found

£25

Fastest flight time

1h 20m

Direct flights

Every day

Airports in Belfast

2 airports
The best one-way flight to Belfast from Southampton in the past 72 hours is £25. The best return flight deal from Southampton to Belfast found on momondo in the last 72 hours is £52.
The fastest flight from Southampton to Belfast takes 1h 20m
Direct flights go from Southampton to Belfast every day.
There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)
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  • How far is Southampton Eastleigh to Belfast by plane?

    Southampton Eastleigh and Belfast are 317.1 mi apart from one another. In terms of flight time, this usually takes a little over 1h 20m.

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

    Prices for flights from Southampton Eastleigh Airport to Belfast refresh daily.

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

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

    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.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents you'll need for your trip to Belfast 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Southampton to Belfast

Compare and see reviews for airlines that fly from Southampton to Belfast with momondo
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £32Free CancellationRating
6.9
1,820 reviews
Search easyJet flights
Aer LingusPriceFrom £61Free CancellationRating
7.2
1,225 reviews
Search Aer Lingus flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Southampton to Belfast. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Southampton to Belfast flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Southampton to Belfast.

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

Price alerts on flights to Belfast from Southampton are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast
Belfast Intl Airport
Belfast City Airport