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Belfast Intl

$321+ Cheap flights from Heathrow (LHR) to Belfast Intl (BFS)

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BFS
Jan 4 — Jan 111
Sun 1/4
Sun 1/11
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Belfast Intl are usually found in March or January, booked 61 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from Heathrow to Belfast Intl

Cheapest flights from Heathrow to Belfast Intl
Explore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 5, 2025.

This Mytrip deal was found by Cheapflights users on 12/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:00 amLHR - BFS
1 stop13h 00mMultiple Airlines
Fri 12/197:30 amBFS - LHR
1 stop9h 10mMultiple Airlines
Deal found 12/4$474
This Mytrip deal was found by Cheapflights users on 12/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:50 amLHR - BFS
2 stops7h 55mMultiple Airlines
Tue 12/169:35 pmBFS - LHR
3 stops21h 05mMultiple Airlines
Deal found 12/4$795
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Fri 12/267:00 amLHR - BFS
1 stop5h 50mMultiple Airlines
Sun 1/47:25 amBFS - LHR
2 stops13h 35mMultiple Airlines
Deal found 12/4$1,035
This Kiwi.com deal was found by Cheapflights users on 12/4. 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 12/272:25 pmLHR - BFS
1 stop5h 00mMultiple Airlines
Sat 1/312:00 pmBFS - LHR
2 stops9h 00mMultiple Airlines
Deal found 12/4$2,194

Find flight deals from Heathrow to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Belfast Intl (BFS). 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 December 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$402
(Kiwi.com)

One-way from

$214
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$194
Provider with most accurate pricing for London Heathrow-Belfast Intl flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Belfast Intl flights.
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From London Heathrow to Belfast Intl
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One-way flight from London Heathrow to Belfast Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($20 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 December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Belfast Intl 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 December 5, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Belfast Intl Airport that are best for you.

Fly from

Heathrow

Fly to

Belfast Intl

Route

Depart

Return

Price

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 1/18

7:00 am-12:45 pm

1 stop5h 45m

Belfast Intl

Sun 1/25

7:30 am-6:40 pm

2 stops11h 10m

$402

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 2/23

8:45 am-10:25 pm

2 stops13h 40m

Belfast Intl

Thu 2/26

4:50 pm-11:15 am

2 stops18h 25m

$403

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 1/18

7:00 am-12:45 pm

1 stop5h 45m

Belfast Intl

Thu 1/22

10:10 am-4:40 pm

1 stop6h 30m

$474

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 12/15

9:00 am-10:00 pm

1 stop13h 00m

Belfast Intl

Fri 12/19

7:30 am-4:40 pm

1 stop9h 10m

$474

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 2/18

6:30 pm-11:45 am

2 stops17h 15m

Belfast Intl

Sat 2/21

7:10 am-9:35 pm

2 stops14h 25m

$484

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 12/16

8:50 am-4:45 pm

2 stops7h 55m

Belfast Intl

Tue 12/16

9:35 pm-6:40 pm

3 stops21h 05m

$795

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 12/26

7:00 am-12:50 pm

1 stop5h 50m

Belfast Intl

Sun 1/4

7:25 am-9:00 pm

2 stops13h 35m

$1,035

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 12/27

2:25 pm-7:25 pm

1 stop5h 00m

Belfast Intl

Sat 1/3

12:00 pm-9:00 pm

2 stops9h 00m

$2,194

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 4/4

2:40 pm-9:15 pm

2 stops6h 35m

$321

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 2/12

10:35 pm-12:50 pm

2 stops14h 15m

$815

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Compare providers for flights from Heathrow to Belfast Intl

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 Heathrow to Belfast Intl in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*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 London Heathrow Airport-Belfast Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Belfast Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Belfast Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Belfast Intl 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 London Heathrow Airport-Belfast Intl 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 Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow 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 London Heathrow Airport to Belfast Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Belfast Intl. Price data was last updated on November 28, 2025.

The best time to book flights from London Heathrow Airport to Belfast Intl Airport is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of $53). Flying from London Heathrow Airport to Belfast Intl Airport in August is currently the most expensive (average of $116). 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 LHR to BFS?

Find hourly flight availability from Heathrow to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 5, 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Belfast Intl Airport is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 62% on airfare.

How much does it cost to fly round-trip from London Heathrow Airport to Belfast Intl Airport?

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Belfast Intl. Reviews last updated December 5, 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Belfast Intl 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
7,562 reviews

Boarding

6.9

Crew

7.6

Entertainment

6.4

Comfort

6.7

Food

6.4

Overall

6.7

Reviews

1 / 20
10.0
Excellent

María Victoria,Nov 2025

LHR - GRU

Seats were comfortable for economy. Blanket and pillow provided, same as headphones. For some reason the uk plug wouldn’t charge and had to use the US charger. Also couldn’t use WiFi as keep saying BA club pw was wrong although it wasn’t: but minor things. Overall good flight and attentive crew.
British Airways
6.7
Okay
7,562 reviews
British Airways
6.7
Okay
7,562 reviews

Boarding

6.9

Crew

7.6

Entertainment

6.4

Comfort

6.7

Food

6.4

Overall

6.7

Reviews

1 / 20
10.0
Excellent

María Victoria,Nov 2025

LHR - GRU

Seats were comfortable for economy. Blanket and pillow provided, same as headphones. For some reason the uk plug wouldn’t charge and had to use the US charger. Also couldn’t use WiFi as keep saying BA club pw was wrong although it wasn’t: but minor things. Overall good flight and attentive crew.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Belfast Intl. 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 London Heathrow Airport to Belfast Intl Airport round-trip?

    Currently priced at $111, British Airways will fly you from London Heathrow Airport to Belfast Intl Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 36% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of $53). Flying from London Heathrow Airport to Belfast Intl Airport in August is currently the most expensive (average of $116). 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

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Other flights to Belfast Intl

Explore flights to Belfast Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on December 5, 2025.
Belfast Intl Airport to Manchester flights
Belfast Intl Airport to Edinburgh flights
Belfast Intl Airport to Glasgow Intl Airport flights

Top airline flying from Heathrow to Belfast Intl

Discover the top airline that operate flights from Heathrow to Belfast Intl. 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 December 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$111Average$183FlexibilityNo cancel feeOn-time70%

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