Cheap flights from Southampton to Belfast Intl Airport from £51
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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BFS
8 Jan — 15 Jan1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Southampton Eastleigh to Belfast Intl are usually found in January or February, booked 83 days in advance, depart on a Tuesday or Saturday and return on a Saturday
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 9 December 2025.
Tue 16/1209:20SOU - BFS
1 stop7h 40mMultiple Airlines
Sat 20/1212:45BFS - SOU
2 stops20h 00mMultiple Airlines
Deal found 7/12£214
Sat 13/1213:55SOU - BFS
1 stop23h 35measyJet
Tue 16/1208:35BFS - SOU
1 stop24h 15measyJet
Deal found 7/12£223
Tue 16/1209:20SOU - BFS
1 stop7h 40measyJet
Sat 20/1206:55BFS - SOU
1 stop6h 15measyJet
Deal found 7/12£228
Sat 13/1209:30SOU - BFS
2 stops21h 15mMultiple Airlines
Tue 16/1209:25BFS - SOU
2 stops26h 30mMultiple Airlines
Deal found 7/12£239
Sat 13/1209:30SOU - BFS
2 stops21h 15mMultiple Airlines
Wed 17/1215:15BFS - SOU
2 stops17h 30mMultiple Airlines
Deal found 7/12£250
Sat 13/1213:55SOU - BFS
1 stop23h 35measyJet
Wed 17/1220:40BFS - SOU
1 stop20h 40measyJet
Deal found 7/12£254
Tue 9/1220:10SOU - BFS
2 stops14h 10mMultiple Airlines
Thu 11/1218:40BFS - SOU
2 stops19h 05mMultiple Airlines
Deal found 8/12£266
Tue 9/1209:20SOU - BFS
1 stop7h 40mMultiple Airlines
Wed 10/1208:40BFS - SOU
2 stops24h 05mMultiple Airlines
Deal found 8/12£287
Best flights from Southampton to Belfast Intl
Discover carefully curated flight deals from Southampton to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 December 2025.
Fri 10/412:20SOU - BFS
Nonstop1h 15measyJet
Sun 12/410:50BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£71
Fri 24/412:20SOU - BFS
Nonstop1h 15measyJet
Mon 27/410:35BFS - SOU
Nonstop1h 15measyJet
Deal found 7/12£74
Thu 8/117:55SOU - BFS
2 stops27h 10mMultiple Airlines
Mon 12/108:15BFS - SOU
1 stop3h 10mMultiple Airlines
Deal found 8/12£151
Thu 8/117:55SOU - BFS
1 stop25h 40measyJet
Mon 12/108:15BFS - SOU
1 stop3h 10measyJet
Deal found 8/12£86
Mon 6/412:25SOU - BFS
Nonstop1h 15measyJet
Fri 10/410:35BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£103
Sun 18/118:20SOU - BFS
1 stop13h 25measyJet
Wed 21/120:40BFS - SOU
1 stop20h 40measyJet
Deal found 7/12£103
Sun 18/118:20SOU - BFS
1 stop13h 25mMultiple Airlines
Wed 21/106:00BFS - SOU
2 stops26h 45mMultiple Airlines
Deal found 7/12£152
Mon 19/112:05SOU - BFS
1 stop8h 15measyJet
Wed 21/120:40BFS - SOU
1 stop20h 40measyJet
Deal found 8/12£109
Fri 29/512:20SOU - BFS
Nonstop1h 15measyJet
Sun 31/510:50BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£133
Direct flights from Southampton to Belfast Intl
Explore direct flight options from Southampton to Belfast Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 9 December 2025.
Fri 10/412:20SOU - BFS
Nonstop1h 15measyJet
Sun 12/410:50BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£71
Fri 24/412:20SOU - BFS
Nonstop1h 15measyJet
Mon 27/410:35BFS - SOU
Nonstop1h 15measyJet
Deal found 7/12£74
Mon 6/412:25SOU - BFS
Nonstop1h 15measyJet
Fri 10/410:35BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£103
Fri 29/512:20SOU - BFS
Nonstop1h 15measyJet
Sun 31/510:50BFS - SOU
Nonstop1h 15measyJet
Deal found 8/12£133
Last-minute flights from Southampton to Belfast Intl
Discover last-minute flight deals from Southampton to Belfast Intl. Data last updated 9 December 2025 and is based on user searches.
Thu 8/117:55SOU - BFS
1 stop25h 40measyJet
Mon 12/108:15BFS - SOU
1 stop3h 10measyJet
Deal found 8/12£86
Thu 8/117:55SOU - BFS
2 stops27h 10mMultiple Airlines
Mon 12/108:15BFS - SOU
1 stop3h 10mMultiple Airlines
Deal found 8/12£151
Sun 18/118:20SOU - BFS
1 stop13h 25measyJet
Wed 21/120:40BFS - SOU
1 stop20h 40measyJet
Deal found 7/12£103
Sun 18/118:20SOU - BFS
1 stop13h 25mMultiple Airlines
Wed 21/106:00BFS - SOU
2 stops26h 45mMultiple Airlines
Deal found 7/12£152
Mon 19/112:05SOU - BFS
1 stop8h 15measyJet
Wed 21/120:40BFS - SOU
1 stop20h 40measyJet
Deal found 8/12£109
Wed 21/112:25SOU - BFS
2 stops20h 55mMultiple Airlines
Wed 28/115:45BFS - SOU
2 stops17h 00mMultiple Airlines
Deal found 7/12£185
One-way flights from Southampton to Belfast Intl
Search for one-way flight options from Southampton to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 9 December 2025.
Sun 15/218:20SOU - BFS
1 stop26h 00measyJet
Deal found 7/12£51
Sat 14/217:15SOU - BFS
1 stop4h 45mMultiple Airlines
Deal found 7/12£86
Sun 15/220:10SOU - BFS
2 stops22h 45mMultiple Airlines
Deal found 7/12£91
Sat 14/213:55SOU - BFS
2 stops18h 30measyJet
Deal found 7/12£115
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 9 December 2025.
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 9 December 2025.
Use the filters below to find and compare flights from Southampton to Belfast Intl Airport that are best for you.
Fly from
Southampton
Fly to
Belfast Intl
Route
Depart
Return
Price
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 10/4
12:20-13:35
Nonstop1h 15m
Belfast Intl
Sun 12/4
10:50-12:05
Nonstop1h 15m
£71
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 24/4
12:20-13:35
Nonstop1h 15m
Belfast Intl
Mon 27/4
10:35-11:50
Nonstop1h 15m
£74
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Thu 8/1
17:55-19:35
1 stop25h 40m
Belfast Intl
Mon 12/1
08:15-11:25
1 stop3h 10m
£86
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Mon 6/4
12:25-13:40
Nonstop1h 15m
Belfast Intl
Fri 10/4
10:35-11:50
Nonstop1h 15m
£103
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sun 18/1
18:20-07:45
1 stop13h 25m
Belfast Intl
Wed 21/1
20:40-17:20
1 stop20h 40m
£103
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Mon 19/1
12:05-20:20
1 stop8h 15m
Belfast Intl
Wed 21/1
20:40-17:20
1 stop20h 40m
£109
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 29/5
12:20-13:35
Nonstop1h 15m
Belfast Intl
Sun 31/5
10:50-12:05
Nonstop1h 15m
£133
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Thu 8/1
17:55-21:05
2 stops27h 10m
Belfast Intl
Mon 12/1
08:15-11:25
1 stop3h 10m
£151
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sun 18/1
18:20-07:45
1 stop13h 25m
Belfast Intl
Wed 21/1
06:00-08:45
2 stops26h 45m
£152
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sun 15/2
18:20-20:20
1 stop26h 00m
£51
Flights are sorted by cheapest return flights first.
Deals found on 7/12
Showing 1-10 of 13 results
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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 5 December 2025.
Booking 83 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, January is the cheapest month in which you can book a flight from Southampton to Belfast Intl Airport (average of £14). Flying from Southampton to Belfast Intl Airport in August is currently the most expensive (average of £40). 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 9 December 2025.
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 in the morning tend to be the most expensive. A flight at midday could potentially save you up to 34% on airfare.
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 9 December 2025.
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.
Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
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 £28. Another airline that can offer you cheap pricing is Aer Lingus. easyJet is priced at 73% 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 £31. On average you can expect to pay £70. The most popular route, (Southampton Eastleigh - Belfast Intl), can usually be booked for £61.
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, January is the cheapest month in which you can book a flight from Southampton to Belfast Intl Airport (average of £14). Flying from Southampton to Belfast Intl Airport in August is currently the most expensive (average of £40). 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.
Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 December 2025.
Browse through other flights departing from Southampton. Flights are based on user searches made on Cheapflights and were last updated on 9 December 2025.
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 9 December 2025.
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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