Cheap Flights from Belfast to London Heathrow

Compare Belfast to London Heathrow flight deals

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

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Flight deals from Belfast to London Heathrow

Looking for a cheap last-minute deal or the best return flight from Belfast to London Heathrow Airport? If you want to travel next month, return fares start from R 2,524. Find the lowest prices on one-way and return tickets right here.

London.R 1,517 per passenger.Departing Fri, 15 May.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Fri, 15 May, arriving in London Heathrow.Price includes taxes and charges.From R 1,517, select.

London.R 1,522 per passenger.Departing Fri, 23 Oct.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Fri, 23 Oct, arriving in London Heathrow.Price includes taxes and charges.From R 1,522, select.

London.R 1,522 per passenger.Departing Tue, 8 Sep.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Tue, 8 Sep, arriving in London Heathrow.Price includes taxes and charges.From R 1,522, select.

London.R 1,522 per passenger.Departing Wed, 10 Mar.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Wed, 10 Mar, arriving in London Heathrow.Price includes taxes and charges.From R 1,522, select.

London.R 1,522 per passenger.Departing Sat, 14 Nov.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Sat, 14 Nov, arriving in London Heathrow.Price includes taxes and charges.From R 1,522, select.

London.R 1,522 per passenger.Departing Tue, 8 Dec.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Tue, 8 Dec, arriving in London Heathrow.Price includes taxes and charges.From R 1,522, select.

London.R 1,523 per passenger.Departing Wed, 27 Jan.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Wed, 27 Jan, arriving in London Heathrow.Price includes taxes and charges.From R 1,523, select.

London.R 1,551 per passenger.Departing Mon, 1 Jun.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Mon, 1 Jun, arriving in London Heathrow.Price includes taxes and charges.From R 1,551, select.

London.R 1,590 per passenger.Departing Thu, 13 Aug.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Thu, 13 Aug, arriving in London Heathrow.Price includes taxes and charges.From R 1,590, select.

London.R 1,590 per passenger.Departing Tue, 7 Jul.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Tue, 7 Jul, arriving in London Heathrow.Price includes taxes and charges.From R 1,590, select.

London.R 1,612 per passenger.Departing Fri, 24 Apr.One-way flight with British Airways.Outbound direct flight with British Airways departs from Belfast City on Fri, 24 Apr, arriving in London Heathrow.Price includes taxes and charges.From R 1,612, select.

Find the cheapest month to fly from Belfast to London Heathrow

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

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Direct flights from Belfast to London Heathrow

Belfast to London Heathrow: 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 Heathrow.

Belfast to London: Flight information

The things to know before you go.

Cheapest flight found	R 1,517
Cheapest month to fly	May
Average flight time	1 hr, 23 mins
Most popular airline	British Airways
Average flights per week	250

Finding cheap flights from Belfast to London Heathrow: Frequently asked questions

How much are return flights from Belfast to London Heathrow?

The best price we found for a return flight from Belfast to London Heathrow is R 2,477. 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 London Heathrow?

1 hour and 23 minutes is the average flight time from Belfast to London Heathrow.

Which airlines fly direct from Belfast to London Heathrow?

Aer Lingus, British Airways and American Airlines fly direct from Belfast to London Heathrow.

How many flights are there a week from Belfast to London Heathrow?

As of April 2026, there are 234 flights per week flying from Belfast to London Heathrow.

When is the cheapest time to fly from Belfast to London Heathrow?

The cheapest month to fly from Belfast to London Heathrow is usually September.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Belfast to London Heathrow Airport on Friday, 4 September 2026.

Can I get a direct flight from Belfast to London Heathrow Airport?

Yes – the average flight time is 1 hour and 23 minutes.

How can I find the best flight deal to London Heathrow?

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 Heathrow 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 London?

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.

Which is the cheapest airline to fly from Belfast to London Heathrow with?

The cheapest airline that flies to London Heathrow is British Airways .

Flying from Belfast to London Heathrow Airport (LHR): What you need to know

Get your trip started at George Best Belfast City Airport (BHD), the main airport in Belfast. Look for flights from Belfast to London Heathrow Airport (LHR) that leave from this base.
London Heathrow Airport is located in London. The city's timezone is UTC+0, which is the same as Belfast.
For a stress-free journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably catch your flight from Belfast to LHR.
Travelling over a peak time like September? Major public holidays and other popular seasons can lead to longer queues and delays at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.

Airports in Belfast

Belfast International Airport (BFS)

Travelling from central Belfast to BFS takes about 45 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 19 kilometres in 25 minutes or so, depending on traffic.
Catching an early flight from Belfast to London Heathrow Airport? Avoid rushing to the terminal (and sneak in some extra snooze time) by picking one of these stays near Belfast International Airport:
Belfast International Airport has an excellent on-time record, making delays less likely. Departures from BFS arrive at their destination as scheduled 82% of the time.

George Best Belfast City Airport (BHD)

Consider starting your trip from George Best Belfast City Airport (BHD). You can book a direct Belfast to London Heathrow Airport (LHR) plane ticket from this popular hub.
From BHD, direct flights from Belfast to LHR can be booked with British Airways.
British Airways is the top choice for passengers flying from BHD to LHR.
Fly with British Airways if punctuality is a priority. Its flights between George Best Belfast City Airport and London Heathrow Airport land as scheduled 81.85% of the time.
You can arrive at BHD from the centre of Belfast in approximately 15 minutes by car (depending on traffic). The ride on public transport takes roughly 25 minutes to travel the 5 kilometres or so.
Want to enjoy an extra night away before catching your Belfast to LHR flight? Kick back in a hotel near George Best Belfast City Airport before your break officially starts. These stays are calling your name:
Flights from George Best Belfast City Airport have a strong track record for punctuality, with 80% of them arriving on schedule.

About London Heathrow Airport (LHR)

Have a late flight from Belfast to London Heathrow Airport? Don't let it rob you of real rest. Stay at one of these hotels near LHR and turn out the lights sooner:
To get the lowest price, book your ride around one week in advance of your Belfast to London Heathrow Airport flight.

Getting from London Heathrow Airport (LHR) to central London

Central London is around 24 kilometres from London Heathrow Airport and takes about 45 minutes to reach by car. Explore your options for getting into the city, whether that's with a car hire, taxi or ride-share.
Travelling by public transport will take you around 25 minutes.

How to find the cheapest flights from Belfast to London Heathrow Airport (LHR)

The cheapest price we've found for a one-way ticket from Belfast to London Heathrow Airport is R 1,517. For a return flight on this route, the best price is R 2,477. Depending on how early you book and the availability, these fares could change.
Book seven months before you want to fly. Research into pricing trends suggests this is the ideal window for finding cheap flights from Belfast to LHR.
Plan your trip for December. That's the best month for scoring a great bargain on Belfast to London Heathrow Airport tickets. If you're flexible with your dates, use the 'Whole month' tool to find the lowest price across every month.
You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll let you know when a new deal shows up on plane tickets from Belfast to LHR.
Tailor your flights using filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Belfast to London Heathrow Airport.

The best time to fly from Belfast to London Heathrow Airport (LHR)

It's time to figure out your travel dates for your flight from Belfast to London Heathrow Airport (LHR). July is the most popular month to visit London. If a slower pace sounds more appealing, go in January.
Lock in a Belfast to LHR plane ticket departing in July if you're eager to explore the city during its warmest month. You can expect temperatures in London to range from 11ºC (52ºF) to 26ºC (79ºF).
If you want cooler conditions, search for a cheap ticket from Belfast to London Heathrow Airport in January when temperatures are between 0ºC (32ºF) and 9ºC (48ºF).

More about London

Start your London trip right by choosing the ideal place to stay. After booking your flight from Belfast to London Heathrow Airport, check out our range of accommodation options including:
Your London trip isn't complete without checking out the sights. Attractions you won't want to miss include The British Museum, Westminster Abbey and Big Ben.

Explore more of the United Kingdom

Manchester is just one of the many places in the United Kingdom waiting to be discovered once you've seen the sights of London. Around 257 kilometres away to the northwest, its top attractions include Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
Around 153 kilometres northwest of London, Birmingham is another essential stop in the United Kingdom. Get a taste of what this destination has to offer at Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.