Cheap flights from Southampton to Belfast from £26

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BHD
17 May — 24 May1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Southampton Eastleigh to Belfast are usually found in September 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

Enter your travel dates to find the best prices.

Cheapest flights from Southampton to Belfast
Explore the most affordable flight options available from Southampton to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 April 2026.

Sat 13/612:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 12/710:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 13/4£42
Sat 25/412:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 26/410:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 13/4£52
Fri 4/912:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 6/910:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 15/4£61
Tue 12/508:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Tue 19/506:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Deal found 13/4£66
Thu 21/508:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Mon 25/506:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Deal found 14/4£68
Tue 28/412:35
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Thu 30/406:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Deal found 15/4£69
Thu 21/508:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Sun 24/517:25
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Deal found 15/4£69
Mon 28/912:25
SOU
-
BFS
Nonstop1h 15m
easyJet
Sun 4/1010:50
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 14/4£73
Fri 18/912:20
SOU
-
BFS
Nonstop1h 15m
easyJet
Sat 19/910:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 16/4£77
Sat 25/412:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Tue 28/407:15
BFS
-
SOU
1 stop5h 35m
easyJet
Deal found 13/4£78
Sun 26/408:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Wed 29/410:25
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Deal found 17/4£80
Sat 30/512:15
SOU
-
BFS
Nonstop1h 15m
easyJet
Sat 6/610:30
BFS
-
SOU
Nonstop1h 15m
easyJet
Deal found 15/4£80

Find flight deals from Southampton to Belfast

Discover tips and strategies to find the most affordable flight options for your journey from Southampton (SOU) to Belfast (BF1). 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 17 April 2026.

Round-trip from

£42

One-way from

£26

Popular in

December

Cheapest in

September

Average price

£117
easyJet
  • easyJet
  • 13/6-12/7
  • Nonstop
  • 2h 30m total
  • Southampton to Belfast
easyJet
  • easyJet
  • 25/4
  • Nonstop
  • 1h 15m total
  • Southampton to Belfast
Highest demand for flights based on searches. 16% potential increase in price (£16 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Average for round-trip flights in April 2026

Cheapflights 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, Cheapflights users made 858,174 searches. Data last updated 17 April 2026.
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

Cheapest return flight
Fastest return journey

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 4/9

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 6/9

10:50-12:05

Nonstop1h 15m

£61

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 13/6

12:15-13:30

Nonstop1h 15m

Belfast Intl

Sun 12/7

21:25-12:35

1 stop15h 10m

£69

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 28/9

12:25-13:40

Nonstop1h 15m

Belfast Intl

Sun 4/10

10:50-12:05

Nonstop1h 15m

£73

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Mon 28/9

12:25-13:40

Nonstop1h 15m

Belfast Intl

Sat 3/10

10:30-11:45

Nonstop1h 15m

£83

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sun 6/9

12:35-13:50

Nonstop1h 15m

Belfast Intl

Mon 7/9

10:35-11:50

Nonstop1h 15m

£84

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 2/10

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 4/10

10:50-12:05

Nonstop1h 15m

£85

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Sat 20/6

12:15-13:30

Nonstop1h 15m

Belfast Intl

Mon 22/6

10:35-11:50

Nonstop1h 15m

£102

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 19/6

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 21/6

10:50-12:05

Nonstop1h 15m

£106

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Thu 30/4

11:40-15:55

1 stop4h 15m

Belfast Intl

Sat 2/5

10:30-11:45

Nonstop1h 15m

£114

SouthamptonBelfast

SOU - BFS

SOUBFS

Southampton Eastleigh

Fri 24/7

12:20-13:35

Nonstop1h 15m

Belfast Intl

Sun 26/7

10:50-12:05

Nonstop1h 15m

£117

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 41 resultsSorted by cheapest first
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Best time to book a flight from Southampton to Belfast

Have a flexible travel schedule? Discover the best time to fly to Belfast 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

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

Use this chart to determine the optimal time to book a return flight from Southampton to Belfast. Price data was last updated on 10 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. 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?

Currently, September is the cheapest month in which you can book a flight from Southampton to Belfast (average of £15). Flying from Southampton to Belfast in December is currently the most expensive (average of £89). 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 April 2026.

One of the essential ways to save on airfare from Southampton to Belfast 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 41% on airfare.

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

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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. Reviews last updated 17 April 2026.
Read reviews from past customers who have flown with Aer Lingus and easyJet from Southampton to Belfast. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.4

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

Food

6.6

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.

Boarding

7.4

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

Food

6.6

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.

Boarding

7.4

Overall

7.3

Comfort

7.2

Crew

8.1

Entertainment

7.0

Food

6.6

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. 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?

    For a flight from Southampton to Belfast, you will be flying from Eastleigh. Southampton Eastleigh (SOU) is just 3.5 mi from the center of the city. Eastleigh is the only Southampton airport and it handles 0 outbound flights to Belfast per day. 2 airlines have flights to Belfast from Southampton Eastleigh on a regular basis.

  • How long is the flight from Southampton to Belfast?

    There are many flights that can get you from Southampton to Belfast in 1h 15m. Fly via easyJet or Aer Lingus to get the fastest option. Airlines will cover a distance of 326 mi. All flights are typically direct.

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

    Our cheapest airline available from Southampton to Belfast is easyJet. Our recent data shows that you can find tickets from as low as £28 on this airline. An additional option worth looking into is Aer Lingus, starting at £70. You may be able to fly from Southampton to Belfast for 75% less than the average price by searching for these airlines.

  • What are the cheapest flights from Southampton to Belfast?

    Looking at all options, your cheapest flight can be booked for £53. While the most popular route (Southampton Eastleigh - Belfast Intl) can be booked for £58 on average, our data indicates £116 when flying from Southampton to Belfast.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Southampton to Belfast 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?

    Currently, September is the cheapest month in which you can book a flight from Southampton to Belfast (average of £15). Flying from Southampton to Belfast in December is currently the most expensive (average of £89). 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

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Alternative routes for Southampton to Belfast

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Southampton to Belfast

Discover the top 2 airlines that operate flights from Southampton to Belfast. 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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£28Average£83FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£70Average£126FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Southampton to Belfast 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.

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Belfast from Southampton.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Southampton to Belfast, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on Southampton to Belfast flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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