Cheap Flights from Belfast (BELF) to London (YXU)

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

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Find the cheapest month to fly from Belfast to London

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

Belfast to London: Alternative routes

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

Belfast to London: Flight information

The things to know before you go.
Cheapest flight found£437
Cheapest month to flyJune

Finding cheap flights from Belfast to London: Frequently asked questions

The best price we found for a return flight from Belfast to London is £729. 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.
Currently, there are no airlines that fly direct from Belfast to London. But we found flights with one stop from £729.
As of April 2026, there are no flights flying from Belfast to London.
The cheapest month to fly from Belfast to London is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to London Airport on Thursday, 23 April 2026.
No airlines currently offer direct flights between Belfast and London Airport. Most routes have one or more stops.
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 London 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 London is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to London is Ryanair .

Flying from Belfast to London International Airport (YXU): What you need to know

  • London International Airport is located in London. The city follows the UTC-5 timezone and is five hours behind Belfast.

  • Give yourself plenty of time to get on your flight from Belfast to YXU. It's generally best to arrive at least two hours before international departures and an hour ahead for domestic flights.

  • You'll likely experience bigger queues during popular months like June and other peak seasons. Arriving up to four hours ahead of an international flight and two hours for a domestic departure is a good idea.

Airports in Belfast

Belfast International Airport (BFS)

  • Located around 19 kms (12 miles) from central Belfast, BFS can be reached in about 25 minutes by car (depending on traffic). The journey by public transport will take roughly 45 minutes.

  • Want a hassle-free start to your journey? Stay near Belfast International Airport. Whether you're boarding an early flight from Belfast to London International Airport or just don't want to be rushed, these hotels are just what you're after:

  • When it comes to the on-time performance of Belfast International Airport, 68% of flights stick to their scheduled arrival time.

George Best Belfast City Airport (BHD)

  • Using public transport, you can travel from central Belfast to BHD in about 25 minutes. The terminal is roughly 5 kms (3 miles) away, and making the journey by car takes approximately 15 minutes.

  • Get your holiday started early with an additional night away from home. Before catching your Belfast to YXU flight, stay in one of these hotels near George Best Belfast City Airport:

  • 69% of flights taking off from George Best Belfast City Airport arrive according to schedule.

About London International Airport (YXU)

Getting from London International Airport (YXU) to central London

  • London International Airport is roughly 10 kms (6 miles) from central London. How long it takes to get there in a car hire or taxi will depend on the time of day. Do a little research beforehand.

  • Travelling on public transport will take you around 35 minutes.

How to find the cheapest flights from Belfast to London International Airport (YXU)

  • £437 is the best price for a one-way ticket from Belfast to London International Airport. Return flights start at £729. These fares can change depending on demand and availability.

  • Booking early is often the key to scoring a cheap flight from Belfast to YXU. Flight prices rise as demand increases, so the closer your departure date, the more you'll likely spend on your ticket.

  • The 'Whole month' search tool will show you the cheapest Belfast to London International Airport tickets across every month. It's an easy way to find a bargain if your dates are flexible.

  • There's no need to check back in every day to find out if prices have dropped when you create a Price Alert. We'll let you know the moment there's a better deal on plane tickets from Belfast to YXU.

  • Tailor your travel plans using filters. Choose your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Belfast to London International Airport.

The best time to fly from Belfast to London International Airport (YXU)

  • November is the quietest month for flights from Belfast to London International Airport (YXU), while August is the most popular. Find the best time to visit London based on whether you prefer a laid-back vibe or a lively atmosphere.

  • The warmest month in London is July, with temperatures ranging between 13ºC and 27ºC. Book your Belfast to YXU plane ticket then if that's your idea of comfortable weather.

  • January sees temperatures of between -13ºC and 2ºC. Look for cheap tickets from Belfast to London International Airport around that time if you'd rather travel in cooler conditions.

More about London

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in London right here. Explore these options once you've locked in your flight from Belfast to London International Airport:

  • Forks of the Thames River and Falls View Park are a couple of major attractions to add to your London travel itinerary. Keep the momentum going by heading to Fanshawe Pioneer Village.

Explore more of Canada

  • Toronto is just one of the many places in Canada waiting to be explored once you've seen London. Around 161 kms (100 miles) away to the northeast, well-known attractions include CN Tower, The Top CN Tower and Royal Ontario Museum.

  • If there's time to check out another major stop in Canada, consider Mississauga, about 137 kms (85 miles) northeast of London. Lake Ontario, Lake Aquitaine Trail and Mississauga Valley Park are among its highlights.

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