Cheap flights from Southampton to Belfast
Cheap return flights from Southampton to Belfast
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Belfast flight facts
What you need to know
What are the cheapest airlines?
- easyJet
- Ryanair
- British Airways
These airlines usually offer the cheapest flights from Southampton to Belfast.
What airlines fly indirectly?
- Flybe
- KLM
- Aer Lingus
These airlines fly from Southampton to Belfast, but you’ll have at least one layover.
How long is the flight?
1 hour 30 minutes
This is the shortest flight time from Southampton to Belfast.
Alternative flights from the UK to Belfast
Check out prices for other routes
Alternative flights from Southampton
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Southampton/Belfast route. There are around 35 flights on any given week from the UK to Belfast and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Southampton to Belfast
Tips and advice from our flight experts
You've searched for flights from Southampton to Belfast. We've found 15 flights and compared them to give you the best offer. easyJet is, on average, the cheapest airline for this route. Look out for them! The cheapest offer we've found is a one-way ticket for Southampton to Belfast on 20/04/2026 at 10:40 for £52.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 5 airlines that operate the 550 km flight from Southampton to Belfast.
To find the best offers, consider booking in advance or looking for last-minute deals. The low season is usually cheaper. EasyJet is a popular choice for this route, with an average flight duration of 1 hour 30 minutes. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near Belfast
Where other people are flying to
