Cheap flights from Northern Ireland to Southampton from £102
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 19/11. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Northern Ireland to Southampton
Keep the following information in mind while searching for Northern Ireland to Southampton flight deals. Data was last updated 23 October 2025.
Find flight deals from Northern Ireland to Southampton
Cheapest flights from Northern Ireland to SouthamptonExplore the most affordable flight options available from Northern Ireland to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 October 2025.
Explore the most affordable flight options available from Northern Ireland to Southampton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 October 2025.
Cheapflights Fare Finder
Use the filters below to find and compare flights from Northern Ireland to Southampton that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BelfastSouthampton
BHD - SOU
BHDSOU
Belfast City
Thu 27/11
10:10-11:50
Nonstop1h 40m
Southampton Eastleigh
Mon 1/12
19:00-20:35
Nonstop1h 35m
BelfastSouthampton
BHD - SOU
BHDSOU
Belfast City
Thu 27/11
10:10-11:50
Nonstop1h 40m
Southampton Eastleigh
Mon 1/12
12:05-17:15
1 stop5h 10m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Fri 5/12
08:05-19:20
2 stops11h 15m
Southampton Eastleigh
Fri 12/12
08:10-08:25
2 stops24h 15m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Sun 7/12
23:05-14:00
2 stops14h 55m
Southampton Eastleigh
Sun 14/12
18:20-07:45
1 stop13h 25m
BelfastSouthampton
BHD - SOU
BHDSOU
Belfast City
Thu 27/11
17:20-08:05
1 stop14h 45m
Southampton Eastleigh
Mon 1/12
08:40-16:50
1 stop8h 10m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Sun 7/12
21:45-11:25
1 stop13h 40m
Southampton Eastleigh
Sun 14/12
18:20-07:45
1 stop13h 25m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Thu 27/11
18:55-19:20
2 stops24h 25m
Southampton Eastleigh
Mon 1/12
08:30-07:55
2 stops23h 25m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Sat 6/12
13:55-08:45
2 stops18h 50m
Southampton Eastleigh
Sat 13/12
13:55-08:55
2 stops19h 00m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Sat 6/12
07:55-13:10
1 stop5h 15m
Southampton Eastleigh
Sat 13/12
13:55-08:55
2 stops19h 00m
BelfastSouthampton
BFS - SOU
BFSSOU
Belfast Intl
Tue 4/11
07:00-15:35
2 stops8h 35m
Southampton Eastleigh
Tue 4/11
20:10-10:45
2 stops14h 35m
Best time to book a flight from Northern Ireland to Southampton
Have a flexible travel schedule? Discover the best time to fly to Southampton from Northern Ireland with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Northern Ireland to Southampton
What is the cheapest month to book a flight from Northern Ireland to Southampton?
Currently, March is the cheapest month in which you can book a flight from Northern Ireland to Southampton (average of £14). Flying from Northern Ireland to Southampton in July is currently the most expensive (average of £47). 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 NIR to SOU?
Find hourly flight availability from Northern Ireland 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 23 October 2025.
It’s typically best to fly out from Northern Ireland to Southampton in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.
Related info for your journey
Find useful and relevant information for your journey from Northern Ireland to Southampton. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Northern Ireland to Southampton
See prices for flight routes from nearby airports that may be better suited for you.
Top 2 airlines flying from Northern Ireland to Southampton
Discover the top 2 airlines that operate flights from Northern Ireland 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 23 October 2025.
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 Northern Ireland to Southampton?
Deals for Northern Ireland to Southampton flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Southampton?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Southampton.
Can Cheapflights find flights from Northern Ireland to Southampton with no change fees?
Need flexible booking options for your flight to Southampton from Northern Ireland? 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 Northern Ireland to Southampton become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!