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Cheap flights from London to Belfast from €109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Belfast departing on 11/8. 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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Find the cheapest flights from London to Belfast

Cheap return flights

Logo
07:00 - 13:00LHR-BFS
6h 00m1 stop
Logo
14:35 - 20:45BFS-LHR
6h 10m1 stop
€200
Find Deal
Thu, 25 Sep - Mon, 29 Sep
Logo
06:15 - 09:15LHR-BFS
3h 00m1 stop
Logo
17:55 - 21:50BFS-LHR
3h 55m1 stop
€205
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Mon, 15 Sep - Mon, 22 Sep
Logo
21:45 - 07:50LHR-BFS
10h 05m1 stop
Logo
17:55 - 21:10BFS-LHR
3h 15m1 stop
€277
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Sun, 14 Sep - Sun, 21 Sep
Logo
06:20 - 21:50LHR-BFS
15h 30m2 stops
Logo
22:20 - 09:05BFS-LHR
10h 45m1 stop
€334
Find Deal
Mon, 15 Sep - Mon, 22 Sep

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 2 August 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

Thu 25/9

07:00-13:00

1 stop6h 00m

Belfast Intl

Mon 29/9

14:35-20:45

1 stop6h 10m

€200

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 15/9

06:15-09:15

1 stop3h 00m

Belfast Intl

Mon 22/9

17:55-21:50

1 stop3h 55m

€205

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 14/9

21:45-07:50

1 stop10h 05m

Belfast Intl

Sun 21/9

17:55-21:10

1 stop3h 15m

€277

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 15/9

06:20-21:50

2 stops15h 30m

Belfast Intl

Mon 22/9

22:20-09:05

1 stop10h 45m

€334

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 11/8

21:50-22:40

1 stop24h 50m

€109

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 23/8

21:55-08:55

1 stop11h 00m

€127

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 10/8

21:45-07:50

1 stop10h 05m

€204

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 10/8

21:45-07:50

1 stop10h 05m

€218

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 7/8

20:50-07:10

1 stop10h 20m

€228

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 7/8

20:50-07:10

1 stop10h 20m

€234

Flights are sorted by cheapest return flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
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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 day to depart on your flight to Belfast Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Belfast Intl Airport. Tickets to fly out on this day can be as low as €100. Flights from London to Belfast Intl Airport on a Tuesday will generally be more expensive and average around €139. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 €100. Flights in the evening are often more expensive, with an average ticket price of €170.

What is the cheapest London to Belfast Intl flight route?

Fly from London Stansted 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 €148 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 €102 on momondo.

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

There are 1 cabin classes 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.

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

As of August 2025, prices for London to Belfast Intl Airport flights are approximately 8% 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

Best price found

€109

Fastest flight time

3h 00m

Direct flights

None
The best one-way flight to Belfast Intl Airport from London in the past 72 hours is €109. The best return flight deal from London to Belfast Intl Airport found on momondo in the last 72 hours is €200.
The fastest flight from London to Belfast Intl Airport takes 3h 00m
There are no direct flights from London to Belfast Intl Airport. Popular non-direct route for this connection is London Heathrow Airport - 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. 3h 00m 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
Armagh
Newry
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

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