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Cheap flights from Belfast Intl Airport to London from £27

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LON
24 Aug — 31 Aug1
1 adult

Cheapflights Tip: The best prices from Belfast Intl to London are usually found in January or March, booked 89 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Belfast Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 19 August 2025.

Round-trip from

£52

One-way from

£27

Popular in

June

Cheapest in

January

Average price

£97

Good round-trip deal

£41 or less

Good one-way deal

£38 or less
easyJet
  • easyJet
  • 18/9-20/9
  • 1 total stop
  • 8h 10m total
  • Belfast to London
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easyJet
  • easyJet
  • 5/9
  • Nonstop
  • 1h 10m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£14 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Belfast Intl to London (LON).
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Price to beat on a one-way flight from Belfast Intl to London (LON).
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Find flight deals from Belfast Intl to London

Cheapest flights from Belfast Intl to London
Explore the most affordable flight options available from Belfast Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 August 2025.

Tue 16/917:50BFS - LTN
1 stop4h 15measyJet
Sat 20/907:05LTN - BFS
Nonstop1h 20measyJet
Deal found 19/8£52
Mon 22/906:10BFS - LGW
Nonstop1h 30measyJet
Wed 24/908:25LGW - BFS
Nonstop1h 30measyJet
Deal found 19/8£52
Thu 11/921:00BFS - LTN
Nonstop1h 10measyJet
Mon 15/921:55LTN - BFS
Nonstop1h 15measyJet
Deal found 18/8£53
Sat 4/1016:30BFS - LGW
Nonstop1h 30measyJet
Sun 5/1007:55LGW - BFS
Nonstop1h 30measyJet
Deal found 18/8£53
Wed 1/1021:05BFS - LGW
Nonstop1h 25measyJet
Wed 8/1006:00LGW - BFS
Nonstop1h 30measyJet
Deal found 17/8£54
Tue 2/907:25BFS - STN
Nonstop1h 20mRyanair
Tue 9/909:10STN - BFS
Nonstop1h 15mRyanair
Deal found 18/8£54
Sat 13/915:35BFS - LTN
Nonstop1h 10measyJet
Tue 23/919:20LTN - BFS
Nonstop1h 15measyJet
Deal found 17/8£55
Sun 16/1120:45BFS - LGW
Nonstop1h 25measyJet
Mon 15/1218:40LGW - BFS
Nonstop1h 30measyJet
Deal found 19/8£55
Tue 18/1113:55BFS - STN
Nonstop1h 15measyJet
Wed 19/1116:50STN - BFS
1 stop3h 40measyJet
Deal found 19/8£55
Fri 19/1208:50BFS - LTN
Nonstop1h 10measyJet
Fri 26/1207:00LTN - BFS
Nonstop1h 20measyJet
Deal found 17/8£55
Tue 30/920:55BFS - LGW
Nonstop1h 30measyJet
Sat 11/1007:30LGW - BFS
Nonstop1h 30measyJet
Deal found 17/8£55
Sun 21/1205:45BFS - STN
Nonstop1h 20mRyanair
Tue 23/1207:45STN - BFS
Nonstop1h 20mRyanair
Deal found 17/8£55

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to London 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, Cheapflights users made 858,174 searches. Data last updated 19 August 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to London that are best for you.

Fly from

Belfast Intl

Fly to

London

Route

Depart

Return

Price

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Mon 22/9

10:00-11:10

Nonstop1h 10m

London Luton

Mon 22/9

21:55-23:10

Nonstop1h 15m

£52

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Thu 18/9

15:10-22:00

1 stop6h 50m

London Luton

Sat 20/9

07:05-08:25

Nonstop1h 20m

£52

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Mon 22/9

06:10-07:40

Nonstop1h 30m

London Gatwick

Wed 24/9

08:25-09:55

Nonstop1h 30m

£52

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Tue 21/10

08:15-09:45

Nonstop1h 30m

London Gatwick

Tue 21/10

18:55-20:25

Nonstop1h 30m

£52

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Fri 17/10

06:05-07:35

Nonstop1h 30m

London Gatwick

Mon 20/10

06:15-07:45

Nonstop1h 30m

£52

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Thu 11/9

21:00-22:10

Nonstop1h 10m

London Luton

Mon 15/9

21:55-23:10

Nonstop1h 15m

£53

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Sat 4/10

16:30-18:00

Nonstop1h 30m

London Gatwick

Sun 5/10

07:55-09:25

Nonstop1h 30m

£53

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Tue 7/10

20:55-22:25

Nonstop1h 30m

London Gatwick

Wed 8/10

06:00-07:30

Nonstop1h 30m

£53

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Tue 2/9

07:25-08:45

Nonstop1h 20m

London Stansted

Tue 9/9

09:10-10:25

Nonstop1h 15m

£54

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Fri 3/10

06:05-07:35

Nonstop1h 30m

London Gatwick

Fri 10/10

06:20-07:50

Nonstop1h 30m

£54

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 60 results
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Best time to book a flight from Belfast Intl to London

Have a flexible travel schedule? Discover the best time to fly to London from Belfast Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast Intl Airport to London

How far ahead should I book a flight from Belfast Intl Airport to London?

Use this chart to determine the optimal time to book a return flight from Belfast Intl to London. Price data was last updated on 8 August 2025.

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Belfast Intl Airport to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Belfast Intl Airport to London?

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London (average of £112). Flying from Belfast Intl Airport to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BFS to LON?

Find hourly flight availability from Belfast Intl to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 August 2025.

One of the essential ways to save on airfare from Belfast Intl Airport to London is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 16% on airfare.

What is the cheapest day to fly from Belfast Intl Airport to London?

Use this chart to determine the cheapest time to fly return from Belfast Intl to London. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Belfast Intl Airport to London flight should consider departing on Tuesday at midday when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost for a return flight from Belfast Intl Airport to London?

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 19 August 2025.
See what other customers who have flown with easyJet, Ryanair, andBritish Airways from Belfast Intl Airport to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
easyJet
6.9
Okay
1,820 reviews
Check prices

Entertainment

5.5

Food

5.9

Boarding

6.7

Comfort

6.7

Overall

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
easyJet
6.9
Okay
1,820 reviews
easyJet
6.9
Okay
1,820 reviews
Check prices

Entertainment

5.5

Food

5.9

Boarding

6.7

Comfort

6.7

Overall

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
Ryanair
6.9
Okay
5,153 reviews
easyJet
6.9
Okay
1,820 reviews
Check prices

Entertainment

5.5

Food

5.9

Boarding

6.7

Comfort

6.7

Overall

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
British Airways
6.7
Okay
7,283 reviews
easyJet
6.9
Okay
1,820 reviews
Check prices

Entertainment

5.5

Food

5.9

Boarding

6.7

Comfort

6.7

Overall

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!
Ryanair
6.2
Okay
easyJet
6.9
Okay
1,820 reviews
Check prices

Entertainment

5.5

Food

5.9

Boarding

6.7

Comfort

6.7

Overall

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Kathleen P,Jun 2025

LGW - GLA

Had to pay £48 because my personal item was 1cm too big! Not happy! First & last time to fly Easy Jet. This small back pack has been used on many domestic & international flights without a problem. I could have easily put it in my luggage as my bag was 5kg under weight. Instead, I was charged £48 even though it didn’t add any extra weight to the flight and it could easily fit under the seat. Hint: Check the “personal item” size carefully!

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Belfast Intl Airport to London?

    For as low as £52, easyJet can have you in London from Belfast Intl Airport in 1h 10m. The distance from Belfast Intl Airport to London is about 308 mi. Generally, flights for this route are direct.

  • What are the cheapest airlines flying from Belfast Intl Airport to London round-trip?

    Flying on Ryanair is currently your cheapest option to London, with prices starting at £29. Additional return tickets that might be worth considering are offered by easyJet and Ryanair, with the lowest prices starting at £31 and £48, respectively. You may be able to fly from Belfast Intl Airport to London for 54% less than the average price by searching for these airlines.

  • What are the most popular routes from Belfast Intl Airport to London?

    While some choose either Belfast Intl - London Luton or Belfast Intl - London Stansted, Belfast Intl - London Gatwick is the most popular route from Belfast Intl Airport to London.

  • Can I find deals for flights from Belfast Intl to London that include hotel bookings?

    Yes. In addition to deals on Belfast Intl to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast Intl to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to London.

  • Can I find deals for business class flights from Belfast Intl to London?

    Yes. Cheapflights offers flight deals from Belfast Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Belfast Intl Airport to London?

    Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London (average of £112). Flying from Belfast Intl Airport to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Deal
Luton
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Ilford
Crawley
Hayes
Watford
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Dartford
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Fly from Belfast Intl to London on these airlines

Choose from the following airlines for your flight from Belfast Intl to London. Flights are based on user searches made on Cheapflights and were last updated on 19 August 2025.
easyJet flights from Belfast Intl to London
Ryanair flights from Belfast Intl to London
Ryanair flights from Belfast Intl to London

Top 4 airlines flying from Belfast Intl to London

Discover the top 4 airlines that operate flights from Belfast Intl to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 19 August 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£29Average£53FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£31Average£75FlexibilityNo cancel feeOn-time86%
Search easyJet flights
RyanairCheapest£48Average£78FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£74Average£144FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast Intl to London?

Cheapflights helps you search for flights from Belfast Intl to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Belfast Intl to London?

Cheapflights helps you find that perfect flight to London from Belfast Intl by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Belfast Intl to London with no change fees?

Yes, we can. To see specific flights from Belfast Intl to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Belfast Intl to London become cheaper?

Not ready to book yet? You can track prices for flights from Belfast Intl to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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