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Cheap flights from Belfast to Southampton from £31

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SOU
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Belfast to Southampton Eastleigh are usually found in March or April, booked 33 days in advance, depart on a Saturday or Wednesday and return on a Tuesday

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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 21 November 2025.

Tue 2/1206:40BHD - SOU
Nonstop1h 45mAer Lingus
Thu 4/1212:20SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 20/11£135
Tue 2/1206:40BHD - SOU
Nonstop1h 45mMultiple Airlines
Thu 4/1220:10SOU - BHD
2 stops22h 15mMultiple Airlines
Deal found 20/11£207
Sun 7/1207:10BFS - SOU
1 stop12h 45mMultiple Airlines
Mon 8/1208:30SOU - BFS
2 stops24h 35mMultiple Airlines
Deal found 20/11£213
Tue 9/1205:45BFS - SOU
2 stops9h 50mMultiple Airlines
Tue 9/1220:10SOU - BFS
2 stops14h 10mMultiple Airlines
Deal found 19/11£225
Tue 2/1218:25BFS - SOU
2 stops17h 30mMultiple Airlines
Thu 4/1209:30SOU - BFS
2 stops21h 55mMultiple Airlines
Deal found 20/11£233
Wed 31/1206:40BHD - SOU
Nonstop1h 45mBritish Airways
Sat 3/108:55SOU - BHD
Nonstop1h 40mBritish Airways
Deal found 19/11£260
Wed 26/1107:00BFS - SOU
2 stops8h 35mMultiple Airlines
Sat 29/1113:55SOU - BFS
2 stops18h 30mMultiple Airlines
Deal found 20/11£280
Tue 30/1206:40BHD - SOU
Nonstop1h 45mBritish Airways
Sat 3/108:55SOU - BHD
Nonstop1h 40mBritish Airways
Deal found 19/11£304
Sat 22/1113:40BHD - SOU
Nonstop1h 35mBritish Airways
Sun 23/1112:20SOU - BHD
Nonstop1h 35mBritish Airways
Deal found 20/11£358
Sun 28/1214:25BHD - SOU
1 stop3h 35mBritish Airways
Sat 3/108:55SOU - BHD
Nonstop1h 40mBritish Airways
Deal found 19/11£397

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 21 November 2025.

Round-trip from

£93

One-way from

£31

Popular in

June

Cheapest in

March

Average price

£127
Aer Lingus
  • Aer Lingus
  • 20/1-22/1
  • Nonstop
  • 3h 20m total
  • Belfast to Southampton
Search Deals
easyJet
  • easyJet
  • 15/5
  • Nonstop
  • 1h 15m total
  • Belfast to Southampton
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£21 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 November 2025
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 21 November 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

BHD - SOU

BHDSOU

Belfast City

Tue 2/12

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Thu 4/12

12:20-13:55

Nonstop1h 35m

£135

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 4/1

22:05-15:35

2 stops17h 30m

Southampton Eastleigh

Sun 11/1

18:20-07:45

1 stop13h 25m

£158

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 20/1

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Thu 22/1

17:55-15:50

2 stops21h 55m

£160

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 4/1

11:30-17:45

1 stop6h 15m

Southampton Eastleigh

Sun 11/1

18:20-07:45

1 stop13h 25m

£196

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 20/1

06:30-17:30

1 stop11h 00m

Southampton Eastleigh

Thu 22/1

17:55-19:30

2 stops25h 35m

£200

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Tue 2/12

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Thu 4/12

20:10-18:25

2 stops22h 15m

£207

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sun 7/12

07:10-19:55

1 stop12h 45m

Southampton Eastleigh

Mon 8/12

08:30-09:05

2 stops24h 35m

£213

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Sat 3/1

12:45-08:45

2 stops20h 00m

Southampton Eastleigh

Sat 10/1

17:15-22:00

1 stop4h 45m

£216

BelfastSouthampton

BFS - SOU

BFSSOU

Belfast Intl

Tue 9/12

05:45-15:35

2 stops9h 50m

Southampton Eastleigh

Tue 9/12

20:10-10:20

2 stops14h 10m

£225

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 16/2

16:55-18:30

Nonstop1h 35m

Southampton Eastleigh

Wed 18/2

12:15-13:50

Nonstop1h 35m

£228

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 29 results
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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 14 November 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, March is the cheapest month in which you can book a flight from Belfast to Southampton (average of £15). Flying from Belfast to Southampton in July is currently the most expensive (average of £48). 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 21 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 40% on flights from Belfast to Southampton by exploring options for tickets in the afternoon.

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 21 November 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
1,377 reviews
Check prices

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Comfort

7.1

Overall

7.2

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
1,377 reviews
Aer Lingus
7.2
Good
1,377 reviews
Check prices

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Comfort

7.1

Overall

7.2

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
1,846 reviews
Aer Lingus
7.2
Good
1,377 reviews
Check prices

Boarding

7.4

Crew

8.0

Entertainment

6.9

Food

6.6

Comfort

7.1

Overall

7.2

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 45m. Aer Lingus provides one of the quickest options available for as low as £135. There are 316 mi between Belfast and Southampton. This flight may include one or multiple stops.

  • 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 £73. easyJet is priced at 67% lower than the current average price of a flight leaving 3 months from now.

  • 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, March is the cheapest month in which you can book a flight from Belfast to Southampton (average of £15). Flying from Belfast to Southampton in July is currently the most expensive (average of £48). 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

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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 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£39Average£113FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£73Average£128FlexibilityNo 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?

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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.

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