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Cheap flights from Belfast to Southampton from £25

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SOU
10 Apr — 17 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Belfast to Southampton Eastleigh are usually found in September or April, booked 78 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Belfast to Southampton

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to Southampton
Explore the most affordable flight options available from Belfast to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 March 2026.

Sat 25/410:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Sun 26/412:35
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 9/3£54
Sun 29/310:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 30/312:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 7/3£63
Mon 30/310:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 6/412:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 7/3£77
Fri 17/412:20
BFS
-
SOU
1 stop20h 00m
easyJet
Sun 19/412:35
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 8/3£77
Mon 20/410:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Mon 27/412:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 6/3£86
Fri 24/421:05
BFS
-
SOU
1 stop10h 15m
easyJet
Sun 26/412:35
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 6/3£91
Thu 9/406:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Thu 16/408:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 10/3£93
Mon 20/406:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Tue 28/408:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 10/3£97
Mon 30/306:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Tue 31/312:35
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 7/3£98
Mon 30/306:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Sun 5/408:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 7/3£99
Mon 30/306:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Wed 1/408:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 7/3£100
Mon 30/310:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Sun 5/412:35
SOU
-
BFS
Nonstop1h 15m
easyJet
Deal found 7/3£101

Find flight deals from Belfast to Southampton

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to Southampton (SOU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 March 2026.

Round-trip from

£54

One-way from

£25

Popular in

July

Cheapest in

September

Average price

£107
easyJet
  • easyJet
  • 25/4-26/4
  • Nonstop
  • 2h 30m total
  • Belfast to Southampton
Search Deals
easyJet
  • easyJet
  • 17/5
  • Nonstop
  • 1h 15m total
  • Belfast to Southampton
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 11 March 2026.
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

Cheapest return flight
Fastest return journey

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 29/3

10:50-12:05

Nonstop1h 15m

Southampton Eastleigh

Mon 30/3

12:25-13:40

Nonstop1h 15m

£63

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 25/4

22:25-09:25

1 stop11h 00m

Southampton Eastleigh

Sun 26/4

12:35-13:50

Nonstop1h 15m

£63

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 20/4

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Mon 27/4

12:25-13:40

Nonstop1h 15m

£86

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Fri 17/4

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Sun 19/4

12:35-13:50

Nonstop1h 15m

£103

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Mon 20/4

10:35-11:50

Nonstop1h 15m

Southampton Eastleigh

Tue 28/4

13:25-20:40

1 stop7h 15m

£108

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 2/8

10:50-12:05

Nonstop1h 15m

Southampton Eastleigh

Sun 9/8

12:35-13:50

Nonstop1h 15m

£112

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Wed 22/4

07:20-12:00

1 stop4h 40m

Southampton Eastleigh

Wed 29/4

12:30-19:40

1 stop7h 10m

£118

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 2/4

08:20-07:25

1 stop23h 05m

Southampton Eastleigh

Mon 6/4

12:25-13:40

Nonstop1h 15m

£132

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 21/4

07:15-12:50

1 stop5h 35m

Southampton Eastleigh

Wed 22/4

12:30-16:20

1 stop3h 50m

£138

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 9/4

08:20-07:25

1 stop23h 05m

Southampton Eastleigh

Thu 16/4

11:40-15:55

1 stop4h 15m

£153

Flights are sorted by cheapest return flights first.

Deals found on 8/3

Showing 1-10 of 36 resultsSorted by cheapest first
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Best time to book a flight from Belfast to Southampton

Have a flexible travel schedule? Discover the best time to fly to Southampton from Belfast with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to Southampton

How far ahead should I book a flight from Belfast to Southampton?

Use this chart to determine the optimal time to book a return flight from Belfast to Southampton. Price data was last updated on 6 March 2026.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Belfast to Southampton. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Belfast to Southampton?

Currently, February is the cheapest month in which you can book a flight from Belfast to Southampton (average of £13). Flying from Belfast to Southampton in July is currently the most expensive (average of £50). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BFS to SOU?

Find hourly flight availability from Belfast to Southampton. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 March 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 47% on flights from Belfast to Southampton by exploring options for tickets at midday.

Reviews of airlines servicing Southampton

Get insights into the airlines that provide service to Southampton. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southampton. Reviews last updated 11 March 2026.
Read through reviews of airlines operating flights from Belfast to Southampton, such as Aer Lingus and easyJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,473 reviews
Check prices

Food

6.6

Boarding

7.4

Entertainment

7.0

Crew

8.1

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Aer Lingus
7.2
Good
1,473 reviews
Aer Lingus
7.2
Good
1,473 reviews
Check prices

Food

6.6

Boarding

7.4

Entertainment

7.0

Crew

8.1

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
easyJet
6.9
Okay
1,884 reviews
Aer Lingus
7.2
Good
1,473 reviews
Check prices

Food

6.6

Boarding

7.4

Entertainment

7.0

Crew

8.1

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Griffith,Feb 2026

MAN - DUB

Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.

Related info for your journey

Find useful and relevant information for your journey from Belfast to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Southampton from Belfast?

    Southampton Eastleigh (SOU), located 3.5 mi from the city center, is the airport you fly into when you book flights from Belfast to Southampton. 2 airlines have flights to Eastleigh from Belfast on a regular basis. Booking flights from Belfast to Southampton Eastleigh should not be difficult; the airport handles an average of 0 inbound flights from Belfast per day.

  • How long is the flight from Belfast to Southampton?

    A quick flight from Belfast to Southampton can take about 1h 15m. easyJet provides one of the quickest options available for as low as £63. There are 326 mi between Belfast and Southampton. All flights are typically direct.

  • What are the cheapest airlines flying from Belfast to Southampton round-trip?

    Currently priced at £25, easyJet will fly you from Belfast to Southampton and back. In addition to easyJet, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Aer Lingus for as low as £76. easyJet is priced at 80% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Belfast to Southampton one-way?

    One-way options have recently been found by users for as low as £26 on easyJet. Other airlines that offer cheap prices include Aer Lingus from £41 and British Airways from £85 one-way.

  • What are the cheapest flights from Belfast to Southampton?

    While on average a flight from Belfast to Southampton is generally £105, our data shows the cheapest flight currently is £53. When looking at the most popular route, (Belfast Intl - Southampton Eastleigh), you can expect to pay £93 for that flight.

  • Can I find deals for flights from Belfast to Southampton that include hotel bookings?

    Yes. In addition to deals on Belfast to Southampton flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Southampton?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Southampton.

  • Can I find deals for business class flights from Belfast to Southampton?

    Yes. Cheapflights offers flight deals from Belfast to Southampton by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Belfast to Southampton?

    Currently, February is the cheapest month in which you can book a flight from Belfast to Southampton (average of £13). Flying from Belfast to Southampton in July is currently the most expensive (average of £50). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Belfast to Southampton

Discover the top 2 airlines that operate flights from Belfast to Southampton. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£25Average£100FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£76Average£133FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Belfast to Southampton?

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Can Cheapflights find flights from Belfast to Southampton with no change fees?

Yes! Cheapflights helps users easily find flights from Belfast to Southampton with no change fees.

Can Cheapflights notify me if prices for flights from Belfast to Southampton become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Southampton from Belfast today and book when prices fit your budget.

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