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Cheap flights from Southampton to Belfast Intl Airport from £23

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BFS
8 May — 15 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Southampton Eastleigh to Belfast Intl are usually found in May or October, booked 76 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Southampton to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Belfast Intl
Explore the most affordable flight options available from Southampton to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 April 2026.

Fri 10/712:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 13/710:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 5/4£82
Fri 10/412:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 13/410:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 6/4£92
Fri 31/712:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 2/810:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 4/4£93
Fri 15/512:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 17/510:20
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 3/4£94
Mon 4/512:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 11/510:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 3/4£100
Mon 4/512:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 18/510:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 6/4£101
Sun 12/412:35
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 13/410:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 7/4£102
Mon 18/512:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Mon 25/510:35
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 3/4£103
Mon 13/412:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Wed 15/407:35
BFS
-
SOU
1 stop4h 25m
easyJet
Deal found 7/4£106
Sat 2/512:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Sat 9/510:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 4/4£111
Sat 25/407:50
SOU
-
BFS
1 stop14h 00m
easyJet
Sun 26/410:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 3/4£113

Find flight deals from Southampton to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Belfast Intl (BFS). 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 8 April 2026.

Round-trip from

£82

One-way from

£23

Popular in

December

Cheapest in

May

Average price

£120

Good round-trip deal

£87 or less
easyJet
  • easyJet
  • 10/7-13/7
  • Nonstop
  • 2h 30m total
  • Southampton to Belfast
Search Deals
easyJet
  • easyJet
  • 15/6
  • Nonstop
  • 1h 15m total
  • Southampton to Belfast
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£17 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Southampton Eastleigh to Belfast Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Belfast Intl 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 8 April 2026.
Use the filters below to find and compare flights from Southampton to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 10/7

12:20-13:35

Nonstop1h 15m

Belfast Intl

Mon 13/7

10:35-11:50

Nonstop1h 15m

£82

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 31/7

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 2/8

10:50-12:05

Nonstop1h 15m

£93

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 17/7

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 19/7

10:50-12:05

Nonstop1h 15m

£101

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 4/5

12:25-13:40

Nonstop1h 15m

Belfast Intl

Mon 18/5

10:35-11:50

Nonstop1h 15m

£101

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 2/5

12:15-13:30

Nonstop1h 15m

Belfast Intl

Sat 9/5

10:30-11:45

Nonstop1h 15m

£111

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 25/4

07:50-21:50

1 stop14h 00m

Belfast Intl

Sun 26/4

10:50-12:05

Nonstop1h 15m

£113

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 31/7

12:20-13:35

Nonstop1h 15m

Belfast Intl

Fri 31/7

17:15-07:20

1 stop14h 05m

£128

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 23/4

11:40-15:55

1 stop4h 15m

Belfast Intl

Fri 24/4

10:35-11:50

Nonstop1h 15m

£133
Cheapest one-way
Fastest single journey

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 15/6

12:25-13:40

Nonstop1h 15m

£23

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 15/8

12:15-13:30

Nonstop1h 15m

£35

Flights are sorted by cheapest return flights first.

Deals found on 7/4

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Southampton to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Southampton 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 Southampton to Belfast Intl Airport

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

Use this chart to determine the optimal time to book a return flight from Southampton to Belfast Intl. Price data was last updated on 3 April 2026.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Southampton to Belfast Intl Airport. 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 Southampton to Belfast Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Southampton to Belfast Intl Airport (average of £15). Flying from Southampton to Belfast Intl Airport in August is currently the most expensive (average of £39). 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 SOU to BFS?

Find hourly flight availability from Southampton to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 April 2026.

One of the essential ways to save on airfare from Southampton to Belfast Intl Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the afternoon could potentially save you up to 60% on airfare.

How much does it cost for a return flight from Southampton to Belfast Intl Airport?

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Belfast Intl. Reviews last updated 8 April 2026.
Read through reviews of airlines operating flights from Southampton to Belfast Intl Airport, 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
1,499 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

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
1,499 reviews
Aer Lingus
7.2
Good
1,499 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

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
1,889 reviews
Aer Lingus
7.2
Good
1,499 reviews
Check prices

Entertainment

7.0

Comfort

7.2

Crew

8.1

Boarding

7.4

Food

6.6

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 Southampton to Belfast Intl. 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 from for flights from Southampton to Belfast Intl?

    If you book a flight to Belfast Intl from Southampton, you will be flying from Eastleigh, which is the city’s only airport. Southampton Eastleigh (SOU) is located 3.5 mi from the center of Southampton. There are 0 flights from Eastleigh to Belfast Intl per day from 2 different airlines.

  • How long is the flight from Southampton to Belfast Intl Airport?

    There are many flights that can get you from Southampton to Belfast Intl Airport in 1h 15m. Fly via easyJet to get the fastest option. The distance between Southampton and Belfast Intl Airport is about 326 mi. All flights are typically direct.

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

    Cheapflights users have booked flights from Southampton to Belfast Intl Airport round-trip from £29. Another airline that can offer you cheap pricing is Aer Lingus. easyJet is priced at 75% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest flights from Southampton to Belfast Intl Airport?

    The cheapest flight price from Southampton to Belfast Intl Airport is £55. On average you can expect to pay £119. The most popular route, (Southampton Eastleigh - Belfast Intl), can usually be booked for £44.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton to Belfast Intl 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 Southampton to Belfast Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Southampton to Belfast Intl Airport (average of £15). Flying from Southampton to Belfast Intl Airport in August is currently the most expensive (average of £39). 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

Travelling to a place near Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry
Ballymena
Cookstown
Dungannon

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Southampton to Belfast Intl

Discover the top 2 airlines that operate flights from Southampton to Belfast Intl. 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 8 April 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£29Average£83FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£71Average£126FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Southampton to Belfast Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Southampton to Belfast Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Southampton to Belfast Intl for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to Belfast Intl from Southampton? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Of course! You can now track prices for flights from Southampton to Belfast Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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