Cheap Flights from Belfast (BELF) to Southampton (SOU)

Compare Belfast to Southampton flight deals

Find the cheapest month or even day of the year to fly to Southampton

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Flight deals from Belfast to Southampton

Looking for a cheap last-minute deal or the best return flight from Belfast to Southampton? Find the lowest prices on one-way and return tickets right here.

Southampton.£41 per passenger.Departing Sun, 26 Apr, returning Sun, 10 May.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sun, 26 Apr, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Sun, 10 May, arriving in Belfast International.Price includes taxes and charges.From £41, select.

Southampton.£44 per passenger.Departing Sun, 26 Apr, returning Mon, 1 Jun.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sun, 26 Apr, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Mon, 1 Jun, arriving in Belfast International.Price includes taxes and charges.From £44, select.

Southampton.£46 per passenger.Departing Sat, 17 Oct, returning Mon, 19 Oct.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sat, 17 Oct, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Mon, 19 Oct, arriving in Belfast International.Price includes taxes and charges.From £46, select.

Southampton.£48 per passenger.Departing Sat, 25 Apr, returning Sun, 26 Apr.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sat, 25 Apr, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Sun, 26 Apr, arriving in Belfast International.Price includes taxes and charges.From £48, select.

Southampton.£50 per passenger.Departing Sun, 29 Mar, returning Mon, 30 Mar.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sun, 29 Mar, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Mon, 30 Mar, arriving in Belfast International.Price includes taxes and charges.From £50, select.

Southampton.£51 per passenger.Departing Mon, 15 Jun, returning Fri, 19 Jun.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Mon, 15 Jun, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Fri, 19 Jun, arriving in Belfast International.Price includes taxes and charges.From £51, select.

Southampton.£52 per passenger.Departing Sun, 17 May, returning Mon, 1 Jun.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Sun, 17 May, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Mon, 1 Jun, arriving in Belfast International.Price includes taxes and charges.From £52, select.

Southampton.£52 per passenger.Departing Mon, 7 Sep, returning Mon, 28 Sep.Return flight with easyJet.Outbound direct flight with easyJet departs from Belfast International on Mon, 7 Sep, arriving in Southampton.Inbound direct flight with easyJet departs from Southampton on Mon, 28 Sep, arriving in Belfast International.Price includes taxes and charges.From £52, select.

Find the cheapest month to fly from Belfast to Southampton

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Belfast to Southampton flights are currently cheapest in October.

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Direct flights from Belfast to Southampton

Belfast to Southampton: Alternative routes

Compare routes from Belfast to Southampton below. You may find an airport to fly into that's cheaper, faster, or easier than Southampton.

Belfast to Southampton: Flight information

The things to know before you go.

Cheapest flight found	£41
Cheapest month to fly	April
Average flight time	1 hr, 27 mins
Most popular airline	Aer Lingus
Average flights per week	48

Finding cheap flights from Belfast to Southampton: Frequently asked questions

How much are return flights from Belfast to Southampton?

The best price we found for a return flight from Belfast to Southampton is £41. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Belfast to Southampton?

1 hour and 27 minutes is the average flight time from Belfast to Southampton.

Which airlines fly direct from Belfast to Southampton?

Aer Lingus, British Airways and easyJet fly direct from Belfast to Southampton.

How many flights are there a week from Belfast to Southampton?

As of February 2026, there are 48 flights per week flying from Belfast to Southampton.

When is the cheapest time to fly from Belfast to Southampton?

The cheapest month to fly from Belfast to Southampton is usually April.

Which upcoming date is cheapest to fly from Belfast to Southampton Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to Southampton Airport on Sunday, 26 April 2026.

Can I get a direct flight from Belfast to Southampton Airport?

Yes – the average flight time is 1 hour and 31 minutes.

How can I find the best flight deal to Southampton?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Southampton but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Southampton?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Southampton is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Belfast to Southampton with?

The cheapest airline that flies to Southampton is easyJet .

Travelling from Belfast to Southampton Airport (SOU): What you need to know

Your adventure begins at one of Belfast's main airports, Belfast International Airport (BFS) or George Best Belfast City Airport (BHD). Check out your options for booking a flight from Belfast to Southampton Airport (SOU) setting off from either of these.
1 hour 15 minutes is the average journey time for a direct Belfast to Southampton Airport flight.
Belfast and Southampton (where Southampton Airport is located) share the UTC+0 timezone. That means you won't need to adjust your watch when you arrive.
Belfast International Airport (BFS) to Southampton Airport (SOU) is the busiest route, with 2 direct services each week. Get from BFS to SOU on easyJet's 6:20am flight.
Your flight from Belfast to SOU won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Show up at the airport even earlier during popular months like June. Aim for two hours before a domestic departure and as much as four hours for an international flight. Once you've checked in, you can use any extra time to relax or find something to eat.

Airports in Belfast

Belfast International Airport (BFS)

Take the express route from Belfast International Airport (BFS). Direct flights from Belfast to Southampton Airport (SOU) operate from here.
easyJet is a well-known carrier that operates direct flights from Belfast to Southampton Airport taking off from BFS.
easyJet is the airline most travellers choose for flights from BFS to SOU.
The carrier with the top on-time arrival rate on this route is easyJet.
Travelling from central Belfast to BFS takes about 45 minutes on public transport. If you ride-share, drive or take a taxi, you'll cover the 19 kms (12 miles) in 25 minutes or so, depending on traffic conditions.
Want a leisurely start to your trip? Stay near Belfast International Airport. Whether you have an early flight from Belfast to Southampton Airport or want to avoid feeling rushed, these hotels are just what you're after:

Of the flights that depart from Belfast International Airport, 68% land on time at their destination.

George Best Belfast City Airport (BHD)

Think about kicking off your journey from George Best Belfast City Airport (BHD). You can book a direct Belfast to Southampton Airport (SOU) plane ticket with departures from this hub.
Aer Lingus has direct flights from Belfast to SOU departing from BHD. Book your favourite window (or aisle) seat and arrive at your destination in a single stretch.
Aer Lingus is the most frequently booked airline flying from BHD to SOU.
Aer Lingus has the strongest on-time record of any carrier operating flights between George Best Belfast City Airport and Southampton Airport.
With public transport, you can travel from central Belfast to BHD in around 25 minutes. The airport is roughly 5 kms (3 miles) away, and making the journey by car will take approximately 15 minutes.
Want to enjoy an extra night away before your Belfast to SOU flight? Check in to a hotel near George Best Belfast City Airport before your holiday officially begins. Here's where you can stay:

Looking at how often flights stay on schedule, George Best Belfast City Airport has an on-time arrival performance of 69%.

About Southampton Airport (SOU)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from Belfast to Southampton Airport. Make yourself comfy at one of these accommodation options near SOU instead:

Grab a Southampton Airport rental car and discover Southampton and beyond with your own wheels. Alamo, Budget and Europcar are popular outlets to choose from here.
To get the best deal, reserve your vehicle around two weeks in advance of your Belfast to Southampton Airport flight.

Getting from Southampton Airport (SOU) to central Southampton

Central Southampton is around 10 kms (6 miles) from Southampton Airport and takes about 15 minutes to reach by car. See what your options are for getting into town, whether that's with a taxi, car hire or ride-share.
Travelling on public transport takes about 25 minutes.

How to find the cheapest flights from Belfast to Southampton Airport (SOU)

£19 is the lowest price for a one-way ticket from Belfast to Southampton Airport. Return flights start from £41. These prices can change depending on demand.
To pick up cheap flights from Belfast to SOU, book early. Airlines generally offer lower prices when flights are first released.
If you can be flexible with your travel plans, try using the 'Whole month' search tool. It'll give you the lowest price across every month when searching for your Belfast to Southampton Airport ticket.
You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll notify you when a better deal comes up on plane tickets from Belfast to SOU.
Tailor your travel plans using filters. Select your arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Belfast to Southampton Airport.

The best time to fly from Belfast to Southampton Airport (SOU)

Think about the pace you're looking for when deciding when to fly. September is the quietest month to visit Southampton. July is when most people book flights from Belfast to Southampton Airport (SOU), which may be ideal if you enjoy travelling when it's busier.
Before locking in your Belfast to SOU plane ticket, consider the kind of weather forecast you're hoping for. July is the warmest month in Southampton, with temperatures ranging from 11ºC to 24ºC.
If you'd rather travel in cooler conditions, search for a cheap ticket from Belfast to Southampton Airport in January when temperatures are between 0ºC and 9ºC.

More about Southampton

After booking your flight from Belfast to Southampton Airport, find a hotel that keeps you close to what you want to see. Make one of these accommodation options your base for exploring Southampton:

Your Southampton trip should come with a side of sightseeing. Major attractions that belong on your itinerary include Site of Jane Austen's House, Mayflower Theatre and Kennet & Avon Canal.

Explore more of the United Kingdom

London is just one of the many cities in the United Kingdom waiting to be discovered after you've experienced Southampton. Around 105 kms (65 miles) away to the northeast, well-known attractions include The British Museum, Westminster Abbey and Big Ben.
Birmingham is another well-known destination in the United Kingdom and is around 177 kms (110 miles) north of Southampton. No journey is complete without a visit to Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.