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Cheap flights from London to Belfast from €294

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Belfast departing on 15/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:10 - 08:20LHR-BFS
11h 10m1 stop
Multiple Airlines Logo
21:15 - 08:30BFS-LHR
11h 15m1 stop
€294Multiple Airlines
Find Deal
Mon, 15 Dec - Mon, 29 Dec
Multiple Airlines Logo
17:50 - 22:20LHR-BFS
4h 30m1 stop
Multiple Airlines Logo
09:55 - 19:15BFS-LHR
9h 20m1 stop
€381Multiple Airlines
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Thu, 4 Dec - Mon, 8 Dec
Multiple Airlines Logo
14:25 - 22:00LHR-BFS
7h 35m1 stop
Multiple Airlines Logo
07:20 - 22:40BFS-LHR
15h 20m2 stops
€450Multiple Airlines
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Mon, 15 Dec - Mon, 29 Dec
Multiple Airlines Logo
06:20 - 13:50LHR-BFS
7h 30m1 stop
Multiple Airlines Logo
14:30 - 21:25BFS-LHR
6h 55m1 stop
€643Multiple Airlines
Find Deal
Sat, 13 Dec - Mon, 15 Dec
Multiple Airlines Logo
08:40 - 18:30LHR-BFS
9h 50m1 stop
Multiple Airlines Logo
14:45 - 20:50BFS-LHR
6h 05m1 stop
€681Multiple Airlines
Find Deal
Sun, 21 Dec - Sun, 28 Dec

momondo Fare Finder

 
Customise your flight search to find flights from London to Belfast Intl 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 13,528 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from London to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 15/12

21:10-08:20

1 stop11h 10m

Belfast Intl

Mon 29/12

21:15-08:30

1 stop11h 15m

€294

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 4/12

17:50-22:20

1 stop4h 30m

Belfast Intl

Mon 8/12

09:55-19:15

1 stop9h 20m

€381

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 15/12

14:25-22:00

1 stop7h 35m

Belfast Intl

Mon 29/12

07:20-22:40

2 stops15h 20m

€450

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 13/12

06:20-13:50

1 stop7h 30m

Belfast Intl

Mon 15/12

14:30-21:25

1 stop6h 55m

€643

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 21/12

08:40-18:30

1 stop9h 50m

Belfast Intl

Sun 28/12

14:45-20:50

1 stop6h 05m

€681

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Belfast from

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

What is the cheapest month to fly to Belfast Intl Airport?

The cheapest month to fly to Belfast Intl Airport from London is in January. Flight prices, which tend to average around €44, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Belfast Intl Airport, with average flight prices from London averaging around €53.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

The cheapest time of day to fly to Belfast Intl Airport is in the morning when flights can be purchased for as low as €104. Flights in the evening are often more expensive, with an average ticket price of €516.

What is the cheapest London to Belfast Intl flight route?

Fly from London Gatwick to Belfast Intl for the best London - Belfast Intl flight prices

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

You are more likely to see cheaper flights to Belfast Intl Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast Intl Airport for around €152 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast Intl Airport from London for as low as €113 on momondo.

What cabin class options are available on London to Belfast Intl flights?

There is only 1 cabin class available to choose from on London to Belfast Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Belfast Intl Airport flights?

No. A direct flight is the cheapest option for a flight between London to Belfast Intl Airport.

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

As of November 2025, prices for London to Belfast Intl Airport flights are approximately 50% more expensive when compared to flights at the same time last year.

When to book flights from London to Belfast Intl Airport

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

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

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

Direct flights

None
There are no direct flights from London to Belfast Intl Airport. There are no popular flight routes from London to Belfast Intl Airport.
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  • How far is London to Belfast Intl by plane?

    Belfast Intl is 536.7 km away from London. 4h 30m is a normal flight duration for this route.

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

    Prices for flights from London to Belfast Intl Airport are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The necessary travel and health documents for your Belfast Intl 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 licence 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 plane model from London to Belfast Intl Airport?

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Newry
Armagh
Ballymena

Why use momondo?

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

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

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

Flights from London to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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 Belfast from London.

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

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from London and alert you when they change.

An easier way to manage your Belfast Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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