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$103+ Cheap flights from Belfast Intl (BFS) to Heathrow (LHR)

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Belfast Intl to London Heathrow are usually found in January or March, booked 76 days in advance, depart on a Friday or Saturday and return on a Saturday

Find flight deals from Belfast Intl to Heathrow

Cheapest flights from Belfast Intl to Heathrow
Explore the most affordable flight options available from Belfast Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:10 amBFS - LHR
1 stop6h 30mMultiple Airlines
Fri 12/261:55 pmLHR - BFS
2 stops8h 05mMultiple Airlines
Deal found 10/30$454
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/132:05 pmBFS - LHR
1 stop7h 20mMultiple Airlines
Mon 12/152:25 pmLHR - BFS
1 stop7h 35mMultiple Airlines
Deal found 10/29$622

Cheap flight deals from Belfast Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Heathrow (LHR). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$454
(Kiwi.com)

One-way from

$103
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$162
Provider with most accurate pricing for Belfast Intl-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Belfast Intl-London Heathrow flights.
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From Belfast Intl to London Heathrow
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One-way flight from Belfast Intl to London Heathrow
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Highest demand for flights based on searches. 8% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Belfast Intl to Heathrow 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 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to London Heathrow Airport that are best for you.

Fly from

Belfast Intl

Fly to

Heathrow

Route

Depart

Return

Price

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 12/18

10:10 am-4:40 pm

1 stop6h 30m

London Heathrow

Fri 12/26

1:55 pm-10:00 pm

2 stops8h 05m

$454

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 12/4

8:25 am-4:50 pm

2 stops8h 25m

London Heathrow

Mon 12/15

7:45 pm-11:40 am

2 stops15h 55m

$609

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 12/13

2:05 pm-9:25 pm

1 stop7h 20m

London Heathrow

Mon 12/15

2:25 pm-10:00 pm

1 stop7h 35m

$622

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 12/19

7:30 am-4:40 pm

1 stop9h 10m

London Heathrow

Sun 12/21

2:25 pm-10:20 pm

1 stop7h 55m

$752

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 12/11

8:40 pm-2:45 pm

2 stops18h 05m

$103

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 1/14

7:55 am-2:30 pm

2 stops6h 35m

$148

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 2/13

7:10 am-5:15 pm

2 stops10h 05m

$153

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 2/10

6:50 am-5:15 pm

2 stops10h 25m

$166

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 11/28

10:00 am-9:05 pm

2 stops11h 05m

$170

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 11/23

11:05 pm-11:25 am

2 stops12h 20m

$182

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 12 results
1
2

Compare providers for flights from Belfast Intl to Heathrow

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Belfast Intl to Heathrow in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Belfast Intl Airport-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Belfast Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Belfast Intl Airport-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Belfast Intl Airport-London Heathrow Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Belfast Intl Airport-London Heathrow Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Belfast Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Belfast Intl with our price prediction graph.
Estimated round-trip 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 Heathrow Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Belfast Intl to Heathrow. Price data was last updated on October 24, 2025.

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Belfast Intl Airport to London Heathrow Airport. 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 Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $43). Flying from Belfast Intl Airport to London Heathrow Airport in May is currently the most expensive (average of $110). 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 LHR?

Find hourly flight availability from Belfast Intl to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 20% on flights from Belfast Intl Airport to London Heathrow Airport by exploring options for tickets in the evening.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated October 30, 2025.
Read through reviews of airlines operating flights from Belfast Intl Airport to London Heathrow Airport, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,487 reviews

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,487 reviews
British Airways
6.7
Okay
7,487 reviews

Overall

6.7

Entertainment

6.4

Boarding

6.9

Food

6.3

Crew

7.6

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

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

  • What is the cheapest airline to fly from Belfast Intl Airport to London Heathrow Airport round-trip?

    British Airways, at $110, was found to be the cheapest airline from Belfast Intl Airport to London Heathrow Airport.. British Airways is 33% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl to Heathrow 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 Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $43). Flying from Belfast Intl Airport to London Heathrow Airport in May is currently the most expensive (average of $110). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Belfast Intl to Heathrow

Discover the top airline that operate flights from Belfast Intl to Heathrow. 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 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$110Average$144FlexibilityNo cancel feeOn-time70%

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