Cheap flights from Southampton to Belfast Intl Airport from £86
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BFS
30 Nov — 7 Dec1
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
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 31 October 2025.
Find 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 31 October 2025.
Sat 8/1109:30SOU - BFS
1 stop5h 40mMultiple Airlines
Sat 15/1112:45BFS - SOU
2 stops20h 00mMultiple Airlines
Deal found 29/10£213
Wed 12/1116:05SOU - BFS
2 stops17h 15mMultiple Airlines
Thu 13/1119:45BFS - SOU
2 stops23h 35mMultiple Airlines
Deal found 30/10£225
Sat 6/1209:30SOU - BFS
1 stop12h 30mMultiple Airlines
Sun 7/1207:30BFS - SOU
2 stops25h 15mMultiple Airlines
Deal found 30/10£226
Sun 9/1118:25SOU - BFS
1 stop13h 00mMultiple Airlines
Sun 16/1122:45BFS - SOU
2 stops20h 35mMultiple Airlines
Deal found 30/10£234
Sun 2/1119:00SOU - BFS
1 stop12h 25mMultiple Airlines
Wed 5/1107:55BFS - SOU
1 stop6h 00mMultiple Airlines
Deal found 30/10£248
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 31 October 2025.
Fri 16/117:45SOU - BFS
1 stop13h 40measyJet
Sun 18/121:45BFS - SOU
1 stop13h 40measyJet
Deal found 30/10£86
Fri 16/108:10SOU - BFS
2 stops24h 15mMultiple Airlines
Sun 18/121:45BFS - SOU
1 stop13h 40mMultiple Airlines
Deal found 30/10£146
Fri 9/117:45SOU - BFS
1 stop13h 40measyJet
Sun 11/121:45BFS - SOU
1 stop13h 40measyJet
Deal found 30/10£99
Sat 10/117:15SOU - BFS
1 stop4h 45mMultiple Airlines
Mon 12/108:15BFS - SOU
1 stop3h 10mMultiple Airlines
Deal found 30/10£166
Sat 6/1209:30SOU - BFS
1 stop12h 30mMultiple Airlines
Sun 7/1207:30BFS - SOU
2 stops25h 15mMultiple Airlines
Deal found 30/10£226
Mon 29/1212:05SOU - BFS
1 stop8h 15measyJet
Fri 2/110:35BFS - SOU
1 stop6h 35measyJet
Deal found 29/10£300
Last-minute flights from Southampton to Belfast Intl
Discover last-minute flight deals from Southampton to Belfast Intl. Data last updated 31 October 2025 and is based on user searches.
Sun 2/1119:00SOU - BFS
1 stop12h 25mMultiple Airlines
Wed 5/1107:55BFS - SOU
1 stop6h 00mMultiple Airlines
Deal found 30/10£248
Wed 5/1114:25SOU - BFS
1 stop5h 50mMultiple Airlines
Sun 9/1114:45BFS - SOU
1 stop17h 10mMultiple Airlines
Deal found 30/10£266
Fri 7/1117:45SOU - BFS
1 stop13h 40measyJet
Sun 9/1121:45BFS - SOU
1 stop13h 40measyJet
Deal found 30/10£287
Sat 8/1109:30SOU - BFS
1 stop5h 40mMultiple Airlines
Sat 15/1112:45BFS - SOU
2 stops20h 00mMultiple Airlines
Deal found 29/10£213
Sun 9/1118:25SOU - BFS
1 stop13h 00mMultiple Airlines
Sun 16/1122:45BFS - SOU
2 stops20h 35mMultiple Airlines
Deal found 30/10£234
Wed 12/1116:05SOU - BFS
2 stops17h 15mMultiple Airlines
Thu 13/1119:45BFS - SOU
2 stops23h 35mMultiple Airlines
Deal found 30/10£225
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 31 October 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 16/1
17:45-07:25
1 stop13h 40m
Belfast Intl
Sun 18/1
21:45-11:25
1 stop13h 40m
£86
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 9/1
17:45-07:25
1 stop13h 40m
Belfast Intl
Sun 11/1
21:45-11:25
1 stop13h 40m
£99
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 16/1
08:10-08:25
2 stops24h 15m
Belfast Intl
Sun 18/1
21:45-11:25
1 stop13h 40m
£146
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sat 10/1
17:15-22:00
1 stop4h 45m
Belfast Intl
Mon 12/1
08:15-11:25
1 stop3h 10m
£166
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sat 6/12
09:30-22:00
1 stop12h 30m
Belfast Intl
Sun 7/12
07:30-08:45
2 stops25h 15m
£226
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Mon 29/12
12:05-20:20
1 stop8h 15m
Belfast Intl
Fri 2/1
10:35-17:10
1 stop6h 35m
£300
Flights are sorted by cheapest return flights first.
Deals found on 30/10
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 24 October 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 31 October 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 25% 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 31 October 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.
Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
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 13h 40m. Fly via easyJet to get the fastest option. The distance between Southampton and Belfast Intl Airport is about 326 mi.
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 £36. Another airline that can offer you cheap pricing is Aer Lingus. easyJet is priced at 63% 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 £51. On average you can expect to pay £83. The most popular route, (Southampton Eastleigh - Belfast Intl), can usually be booked for £92.
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 31 October 2025.
Browse through other flights departing from Southampton. Flights are based on user searches made on Cheapflights and were last updated on 31 October 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 31 October 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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