C$625 Cheap Flights from Belfast to London

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

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Flight deals from Belfast to London Airport

Looking for a cheap last-minute deal or the best return flight from Belfast to London Airport? If you want to travel next month, return fares start from C$2,766. Find the lowest prices on one-way and return tickets right here.

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 December.

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 foundC$625
Cheapest month to flyDecember

Finding cheap flights from Belfast to London: Frequently asked questions

The best price we found for a return flight from Belfast to London is C$1,749. 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 C$1,749.
As of November 2025, there are no flights flying from Belfast to London.
The cheapest month to fly from Belfast to London is usually February.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to London Airport on Monday, February 16, 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 easyJet .

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

  • Belfast is home to two main airports where you can set off on your adventure. Explore your options for booking a flight from Belfast to London International Airport (YXU) flying out of Belfast International Airport (BFS) or George Best Belfast City Airport (BHD).

  • London is 4 hours behind Belfast. London International Airport is located in London, which operates on the UTC-4 timezone.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you'll have plenty of time to catch your flight from Belfast to YXU.

  • During popular months like August, it's a good idea to get to the airport earlier than normal. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're travelling during high season in general.

Airports in Belfast

Belfast International Airport (BFS)

  • BFS is about 32 kilometres from central Belfast. To help you work out how to get there, use Google Maps. This essential traveller tool will give you the quickest route and available public transport options.

  • Catching an early flight from Belfast to London International Airport? Avoid the hassle of rushing to the terminal (and sneak in some extra precious sleep) by choosing one of these hotels near Belfast International Airport:

George Best Belfast City Airport (BHD)

About London International Airport (YXU)

Getting from London International Airport (YXU) to central London

  • From London International Airport, London is approximately 11 kilometres away. It takes around 19 minutes to get to the centre driving.

  • Travelling on public transport typically takes 53 minutes.

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

  • For a one-way ticket from Belfast to London International Airport, C$625 is the best price we've seen. You can also book a return trip from just C$1,749. These are the lowest fares right now but are subject to change depending on availability.

  • Don't leave everything to the last minute. You're more likely to find flight tickets from Belfast to YXU if you book early. Airlines often have some fantastic early bird discounts.

  • Take advantage of the 'Whole month' search function and compare the prices of tickets from Belfast to London International Airport across the entire month. We've made the lowest fares green, so you can easily choose a flight within your budget.

  • Log into your online account or use the app to create a Price Alert. We'll let you know straight away if there's a deal you won't want to miss. It's simple to do, and it'll save you the hassle of looking for a cheap ticket from Belfast to YXU every day.

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

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

  • November is the quietest time to travel to London. Alternatively, follow the crowds and take your trip in August. This is the busiest month for flights from Belfast to London International Airport, but the best time to go is your call.

  • The warmest month in London is July, with the temperature ranging between 13ºC and 27ºC. Book your flights from Belfast to YXU in this month if you enjoy this type of weather.

  • January has average temperatures of between -13ºC and 2ºC. Search for cheap flights from Belfast to London International Airport around that time if you want to travel in cooler conditions.

More about London

  • After locking in your flight from Belfast to London International Airport, think about where you'd like to stay in this city. Make one of these accommodation options your base for exploring London:

  • Fanshawe Pioneer Village and Budweiser Gardens are just two of the top attractions to add to your London must-do list. Keep the sightseeing going at Banting House National Historic Site.

Complete your London trip with a car rental

  • We use the same magic that helped you find your cheap flight from Belfast to London International Airport to track down your perfect ride. Browse our car rentals in London and compare offers in one place. Plus you'll find all the info you need to know, from the most popular car type to the average daily price.

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