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Cheap flights from Belfast Intl Airport to London from £73

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belfast Intl Airport to London departing on 4/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Belfast Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
07:10 - 13:55
BFS
-
LHR
6h 45m
1 stop
Multiple Airlines Logo
08:50 - 15:20
LHR
-
BFS
6h 30m
1 stop
£189Multiple Airlines
Sun, 4 Oct - Thu, 22 Oct
Multiple Airlines Logo
07:10 - 13:55
BFS
-
LHR
6h 45m
1 stop
Multiple Airlines Logo
08:50 - 15:20
LHR
-
BFS
6h 30m
1 stop
£205Multiple Airlines
Sun, 4 Oct - Thu, 15 Oct
Multiple Airlines Logo
08:10 - 12:00
BFS
-
LHR
3h 50m
1 stop
Multiple Airlines Logo
18:00 - 22:20
LHR
-
BFS
4h 20m
1 stop
£242Multiple Airlines
Thu, 22 Oct - Thu, 22 Oct
Multiple Airlines Logo
14:45 - 21:25
BFS
-
LHR
6h 40m
1 stop
Multiple Airlines Logo
19:45 - 10:40
LHR
-
BFS
14h 55m
1 stop
£243Multiple Airlines
Tue, 16 Jun - Tue, 30 Jun
Multiple Airlines Logo
10:15 - 20:05
BFS
-
LHR
9h 50m
1 stop
Multiple Airlines Logo
20:50 - 08:40
LHR
-
BFS
11h 50m
1 stop
£254Multiple Airlines
Thu, 7 May - Sun, 10 May
Multiple Airlines Logo
07:00 - 13:55
BFS
-
LHR
6h 55m
2 stops
Multiple Airlines Logo
20:30 - 08:40
LHR
-
BFS
12h 10m
1 stop
£265Multiple Airlines
Tue, 9 Jun - Thu, 11 Jun
Multiple Airlines Logo
06:40 - 19:25
BFS
-
LHR
12h 45m
2 stops
Multiple Airlines Logo
20:30 - 08:40
LHR
-
BFS
12h 10m
1 stop
£278Multiple Airlines
Thu, 28 May - Thu, 25 Jun
Multiple Airlines Logo
08:10 - 12:05
BFS
-
LHR
3h 55m
1 stop
Multiple Airlines Logo
08:50 - 13:00
LHR
-
BFS
4h 10m
1 stop
£279Multiple Airlines
Wed, 3 Jun - Thu, 4 Jun
Multiple Airlines Logo
20:05 - 07:55
BFS
-
LHR
11h 50m
1 stop
Multiple Airlines Logo
06:15 - 11:45
LHR
-
BFS
5h 30m
1 stop
£282Multiple Airlines
Thu, 28 May - Thu, 25 Jun
Multiple Airlines Logo
11:25 - 18:35
BFS
-
LHR
7h 10m
1 stop
Multiple Airlines Logo
15:50 - 23:05
LHR
-
BFS
7h 15m
2 stops
£284Multiple Airlines
Fri, 22 May - Fri, 29 May

momondo Fare Finder

 
Customise your flight search to find flights from Belfast Intl Airport to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 26 April 2026.
Use the filters below to find and compare flights from Belfast Intl Airport to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 4/10

07:10-13:55

1 stop6h 45m

London Heathrow

Thu 22/10

08:50-15:20

1 stop6h 30m

£189

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 4/10

07:10-13:55

1 stop6h 45m

London Heathrow

Thu 15/10

08:50-15:20

1 stop6h 30m

£205

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 22/10

08:10-12:00

1 stop3h 50m

London Heathrow

Thu 22/10

18:00-22:20

1 stop4h 20m

£242

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 16/6

14:45-21:25

1 stop6h 40m

London Heathrow

Tue 30/6

19:45-10:40

1 stop14h 55m

£243

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 7/5

10:15-20:05

1 stop9h 50m

London Heathrow

Sun 10/5

20:50-08:40

1 stop11h 50m

£254

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 9/6

07:00-13:55

2 stops6h 55m

London Heathrow

Thu 11/6

20:30-08:40

1 stop12h 10m

£265

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 28/5

06:40-19:25

2 stops12h 45m

London Heathrow

Thu 25/6

20:30-08:40

1 stop12h 10m

£278
Fastest return journey

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 3/6

08:10-12:05

1 stop3h 55m

London Heathrow

Thu 4/6

08:50-13:00

1 stop4h 10m

£279

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 28/5

20:05-07:55

1 stop11h 50m

London Heathrow

Thu 25/6

06:15-11:45

1 stop5h 30m

£282

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 22/5

11:25-18:35

1 stop7h 10m

London Heathrow

Fri 29/5

15:50-23:05

2 stops7h 15m

£284

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to London from

How to get the cheapest flight ticket from Belfast Intl Airport to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Belfast Intl Airport and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from Belfast Intl Airport to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £115. The month of December is another great option to travel to London Heathrow Airport, with average flight prices from Belfast Intl Airport averaging around £115.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Belfast Intl Airport to London Heathrow Airport in the evening for as low as £200. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £719 on average. Flights to London Heathrow Airport from Belfast Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight from Belfast Intl Airport to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Belfast Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £134 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Belfast Intl Airport for as low as £106 on momondo.

How have Belfast Intl Airport to London Heathrow Airport flight prices changed over time?

As of April 2026, prices for Belfast Intl Airport to London Heathrow Airport flights are approximately 49% more expensive when compared to flights at the same time last year.

When to book flights from Belfast Intl Airport to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast Intl Airport to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Belfast Intl Airport to London Heathrow Airport (BFS to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast Intl Airport to London Heathrow Airport

Fastest flight time

1h 15m

Direct flights

None
The fastest flight from Belfast Intl Airport to London Heathrow Airport takes 1h 15m
There are no direct flights from Belfast Intl Airport to London Heathrow Airport. There are no popular flight routes from Belfast Intl Airport to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Belfast Intl Airport to London Heathrow Airport

  • How far is Belfast Intl to London Heathrow by plane?

    Belfast Intl and London Heathrow are 324.6 mi apart from one another. A reasonable flight in good conditions will take 1h 15m.

  • When did momondo last update prices for flights from Belfast Intl Airport to London Heathrow Airport?

    Prices for flights from Belfast Intl Airport to London Heathrow Airport refresh daily.

  • How many operators does momondo search for flights from Belfast Intl Airport to London Heathrow Airport?

  • How old do you have to be to fly from Belfast Intl Airport to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Belfast Intl Airport to London Heathrow Airport?

Best airlines flying from Belfast Intl Airport to London Heathrow Airport

Compare and see reviews for airlines that fly from Belfast Intl Airport to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
easyJetPriceFrom £34Free CancellationRating
6.9
1,896 reviews
Search easyJet flights
British AirwaysPriceFrom £86Free CancellationRating
6.7
7,917 reviews
Search British Airways flights

Travelling to a place near London?

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Luton
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Slough
Wembley
Maidstone
Northampton
Swindon
Ipswich
Southend-on-Sea
Ilford
Canterbury
Guildford
Hayes
Poole
Chelmsford
Folkestone
Dover

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Belfast to London with flexible booking policies on momondo?

momondo does allow users to show only those flights to London from Belfast which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Belfast to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Belfast.

I’m not ready to book a flight from Belfast to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Belfast to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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