Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Belfast to Southampton 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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SOU
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Belfast to Southampton Eastleigh are usually found in March or January, booked 34 days in advance, depart on a Saturday or Monday and return on a Tuesday

Cheap 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 18 September 2025.

Round-trip from

£48

One-way from

£26

Popular in

June

Cheapest in

March

Average price

£119
easyJet
  • easyJet
  • 6/10-18/10
  • Nonstop
  • 2h 35m total
  • Belfast to Southampton
Search Deals
easyJet
  • easyJet
  • 18/10
  • Nonstop
  • 1h 15m total
  • Belfast to Southampton
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Belfast to Southampton

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 18 September 2025.

Mon 6/1010:05BFS - SOU
Nonstop1h 15measyJet
Sat 18/1015:20SOU - BFS
Nonstop1h 20measyJet
Deal found 16/9£48
Fri 10/1010:30BFS - SOU
Nonstop1h 15measyJet
Sun 12/1012:00SOU - BFS
Nonstop1h 20measyJet
Deal found 17/9£64
Thu 2/1013:05BFS - SOU
Nonstop1h 15measyJet
Mon 6/1011:50SOU - BFS
Nonstop1h 20measyJet
Deal found 17/9£70
Fri 26/910:40BFS - SOU
Nonstop1h 15measyJet
Sat 27/915:20SOU - BFS
Nonstop1h 20measyJet
Deal found 16/9£70
Sat 4/1013:35BFS - SOU
Nonstop1h 15measyJet
Mon 13/1011:50SOU - BFS
Nonstop1h 20measyJet
Deal found 17/9£77
Wed 15/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Wed 22/1008:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 17/9£82
Fri 3/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Mon 6/1013:10SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 16/9£83
Wed 17/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 21/908:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 16/9£84
Thu 2/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Mon 6/1013:10SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 17/9£85
Thu 16/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Thu 23/1015:45SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 16/9£89
Fri 10/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 12/1008:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 17/9£90
Fri 28/1106:40BHD - SOU
Nonstop1h 45mAer Lingus
Fri 5/1213:05SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 16/9£98

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 18 September 2025.
Use the filters below to find and compare flights from Belfast to Southampton that are best for you.

Fly from

Belfast

Fly to

Southampton

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

£64

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Thu 2/10

13:05-14:20

Nonstop1h 15m

Southampton Eastleigh

Mon 6/10

11:50-13:10

Nonstop1h 20m

£70

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 4/10

13:35-14:50

Nonstop1h 15m

Southampton Eastleigh

Mon 13/10

11:50-13:10

Nonstop1h 20m

£77

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Wed 15/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Wed 22/10

08:55-10:30

Nonstop1h 35m

£82

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 3/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 6/10

13:10-14:45

Nonstop1h 35m

£83

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 2/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Mon 6/10

13:10-14:45

Nonstop1h 35m

£85

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 16/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Thu 23/10

15:45-17:20

Nonstop1h 35m

£89

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 10/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 12/10

08:55-10:30

Nonstop1h 35m

£90

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 28/11

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Fri 5/12

13:05-14:40

Nonstop1h 35m

£98

Flights are sorted by cheapest return flights first.

Deals found on 17/9

Showing 1-10 of 29 results
1
2
3

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 12 September 2025.

Booking 33 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, September is the cheapest month in which you can book a flight from Belfast to Southampton (average of £203). Flying from Belfast to Southampton in November is currently the most expensive (average of £262). 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 18 September 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 54% 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 18 September 2025.
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
1,277 reviews
Check prices

Overall

7.2

Comfort

7.1

Crew

8.0

Food

6.5

Boarding

7.3

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,277 reviews
Aer Lingus
7.2
Good
1,277 reviews
Check prices

Overall

7.2

Comfort

7.1

Crew

8.0

Food

6.5

Boarding

7.3

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
easyJet
6.9
Okay
1,822 reviews
Aer Lingus
7.2
Good
1,277 reviews
Check prices

Overall

7.2

Comfort

7.1

Crew

8.0

Food

6.5

Boarding

7.3

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

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 £48. 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 £39, 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 £66. easyJet is priced at 60% 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 British Airways from £119 and Aer Lingus from £183 one-way.

  • What are the cheapest flights from Belfast to Southampton?

    While on average a flight from Belfast to Southampton is generally £70, our data shows the cheapest flight currently is £30. When looking at the most popular route, (Belfast Intl - Southampton Eastleigh), you can expect to pay £64 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, September is the cheapest month in which you can book a flight from Belfast to Southampton (average of £203). Flying from Belfast to Southampton in November is currently the most expensive (average of £262). 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.

Alternative routes for Belfast to Southampton

See prices for flight routes from nearby airports that may be better suited for you.
Belfast Intl to Gatwick flights
Belfast Intl to Luton flights
Belfast Intl to Heathrow flights
Belfast City to Gatwick flights
Belfast City to Heathrow flights
Belfast Intl to London City flights
Belfast City to London City flights
Belfast Intl to Stansted flights
Belfast Intl to Manchester flights
Belfast City to Stansted flights
Belfast Intl to Liverpool flights
Belfast City to Manchester flights
Belfast City to Luton flights
Belfast Intl to Edinburgh flights
Belfast Intl to Birmingham flights
Belfast City to Liverpool flights
Belfast City to Edinburgh flights
Belfast Intl to Southend flights
Belfast Intl to Southampton flights
Belfast City to Birmingham flights
Belfast Intl to Bristol flights
Belfast Intl to Leeds flights
Belfast City to Southampton flights
Belfast City to Leeds flights
Belfast Intl to Newcastle upon Tyne flights
Belfast City to Bristol flights
Belfast City to Newcastle upon Tyne flights
Belfast City to Southend flights
Derry to Heathrow flights
Belfast Intl to Exeter flights
Derry to Liverpool flights
Belfast City to Exeter flights
Belfast City to East Midlands flights
Belfast Intl to East Midlands flights
Derry to Stansted flights
Belfast City to Doncaster flights
Belfast Intl to Doncaster flights

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 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£39Average£100FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£66Average£118FlexibilityNo 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 Belfast to Southampton?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Southampton from Belfast today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Southampton for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.