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Cheap Flights from Southampton to Belfast

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Compare Southampton to Belfast flight deals

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

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Flight deals from Southampton to Belfast

Looking for a cheap last-minute deal or the best return flight from Southampton to Belfast? Find the lowest prices on one-way and return tickets right here.
Belfast.R 447 per passenger.Departing Sat, 30 Aug.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Sat, 30 Aug, arriving in Belfast International.Price includes taxes and charges.From R 447, select.
Belfast.R 449 per passenger.Departing Thu, 23 Oct.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Thu, 23 Oct, arriving in Belfast International.Price includes taxes and charges.From R 449, select.
Belfast.R 449 per passenger.Departing Thu, 4 Sep.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Thu, 4 Sep, arriving in Belfast International.Price includes taxes and charges.From R 449, select.
Belfast.R 449 per passenger.Departing Thu, 3 Jul.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Thu, 3 Jul, arriving in Belfast International.Price includes taxes and charges.From R 449, select.
Belfast.R 598 per passenger.Departing Thu, 26 Jun.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Thu, 26 Jun, arriving in Belfast International.Price includes taxes and charges.From R 598, select.
Belfast.R 624 per passenger.Departing Thu, 15 May.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Thu, 15 May, arriving in Belfast International.Price includes taxes and charges.From R 624, select.
Belfast.R 1,173 per passenger.Departing Mon, 28 Apr.One-way flight with easyJet.Outbound direct flight with easyJet departs from Southampton on Mon, 28 Apr, arriving in Belfast International.Price includes taxes and charges.From R 1,173, select.

Find the cheapest month to fly from Southampton to Belfast

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Southampton to Belfast flights are currently cheapest in August.
Apr
from R 1,173
May
from R 624
Jun
from R 598
Jul
from R 449
Aug
from R 447
Sep
from R 449
Oct
from R 449
Nov
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Dec
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Jan
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Feb
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Mar
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Direct flights from Southampton to Belfast

Alternative Southampton to Belfast routes

Looking for the cheapest, fastest or easiest route from Southampton to Belfast? You could fly into the following airports instead.

Southampton to Belfast: Flight information

The things to know before you go.
Cheapest flight foundR 447
Cheapest month to flyAugust
Average flight time1 hr, 29 mins
Most popular airlineAer Lingus
Average flights per week59

Finding cheap flights from Southampton to Belfast: Frequently asked questions

There are 2 airports in Belfast: Belfast City and Belfast International.
The best price we found for a return flight from Southampton to Belfast is R 948. 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.
1 hour and 28 minutes is the average flight time from Southampton to Belfast.
Aer Lingus, Emerald Airlines and British Airways fly direct from Southampton to Belfast.
As of April 2025, there are 59 flights per week flying from Southampton to Belfast.
The cheapest month to fly from Southampton to Belfast is usually April 2025.
If you're flying from Southampton Airport, the cheapest airport near Belfast is Belfast International – which is 19.6 km away from the centre of Belfast. We've found flights into this airport from R 948.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Southampton Airport to Belfast on Monday, 13 October 2025.
Yes – the average flight time is 1 hour and 28 minutes.
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 Belfast 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Belfast is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 8°C. August is typically the warmest month in Belfast, when it usually averages around 17°C. You can expect the least rain in May. The coldest month is January, with temperatures averaging 4°C. The rainiest month is October.
Currently, easyJet offers the cheapest flight tickets to Belfast.

Flying from Southampton Airport (SOU) to Belfast: what you need to know

  • Hop on a direct flight from Southampton Airport to Belfast and you'll be in the air for an average of 1 hour 15 minutes.

  • Southampton (the location of Southampton Airport) and Belfast share the same timezone — UTC+0.

  • The most popular route is from Southampton Airport (SOU) to George Best Belfast City Airport (BHD). You can choose from 56 services every week between these two airports. If you want to take off as soon as possible, the earliest flight from SOU to BHD is the 09:15 Aer Lingus service. If you'd rather fly out later on, the final departure is at 19:25 with Aer Lingus.

  • Give yourself enough time to catch your flight from SOU to Belfast. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Flying during a popular month such as August? Public holidays and other popular periods can lead to longer queues at security. Play it safe and get there up to four hours before international flights and two hours before domestic departures.

  • You can catch a direct flight from Southampton Airport to Belfast that touches down at Belfast International Airport (BFS).

  • Book your ticket with Aer Lingus. This popular carrier offers direct flights from Southampton Airport to Belfast.

  • After booking your cheap tickets from Southampton Airport to Belfast, get your travel documents in order. A passport or visa isn't required since you're travelling within United Kingdom. As long as you have some other valid proof of identity, such as a driver's licence or an ID card, you're all set.

  • Located around 8 kilometres from the centre of Southampton, SOU can be reached in approximately 19 minutes by car (depending on traffic). The same journey by public transport is roughly 26 minutes.

  • Searching for a convenient hotel near SOU? If you're catching an early flight from Southampton Airport to Belfast, these accommodation options will have you sleeping moments from your departure gate:

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

  • The best price we've seen for a one-way ticket from Southampton Airport to Belfast is R 447. The cheapest price for a return flight is R 948. Keep in mind fares may change due to demand at the time of booking.

  • To snag cheap tickets from SOU to Belfast, book your journey 9 months ahead of your planned departure.

  • The cheapest month for tickets from Southampton Airport to Belfast is May. Compare prices using the 'Whole month' tool and choose the date that offers the lowest fare.

  • Getting a cheap ticket from SOU to Belfast couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you as soon as there's a better deal.

  • Use the filters to tailor your flights from Southampton Airport to Belfast. Pick your ideal departure and arrival times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to see the best deals.

Airports in Belfast

Belfast International Airport (BFS)

  • Belfast International Airport (BFS) to central Belfast takes about 31 minutes by car. It's approximately 32 kilometres away.

  • It takes roughly 2 hours and 2 minutes if you're travelling by public transport.

  • The last thing you want is a lengthy journey to your hotel if you're getting in late on a flight from Southampton Airport to Belfast. Stay at one of these accommodation options near BFS instead:

George Best Belfast City Airport (BHD)

  • Central Belfast is located around 8 kilometres from George Best Belfast City Airport (BHD). After your flight from Southampton Airport to Belfast has touched down and you've navigated your way to arrivals, the drive should take about 12 minutes.

  • If you're catching public transport, it'll take about 22 minutes.

  • After your flight from SOU to Belfast, rest your head at a hotel near BHD. These are some comfortable accommodation options that'll help you sink into relaxation mode:

Best time to go to Belfast

  • August is the busiest month for flights from Southampton Airport to Belfast. To escape the crowds, plan your trip to Belfast in February when it's quieter.

  • Before booking a flight from Southampton Airport to Belfast, think about the type of weather you enjoy. July is the warmest month in Belfast, with the temperature ranging from 10ºC to 19ºC.

  • January has average temperatures of between 1ºC and 8ºC. Search for cheap flights from SOU to Belfast around that time if you want to travel when it's cooler.

More about Belfast

  • Start your Belfast trip right by choosing the ideal place to stay. As soon as you've booked your flight from Southampton Airport to Belfast, check out our selection of hotels including:

  • All great adventures should include some sightseeing. Titanic Belfast, Crumlin Road Gaol Visitor Attraction and Conference Centre and Botanic Gardens are must-do's during your Belfast adventure.

Complete your Belfast trip with a car rental

  • We use the same magic that helped you find your cheap flight from Southampton Airport to Belfast to track down awesome deals on car rentals. Search for your ride in seconds and easily compare your options. Plus you'll find all the info on car rentals in Belfast, from the most popular rental company to the best time to book.

Plan the rest of your trip from Southampton to Belfast

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.