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$142+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/137:30 am
BFS
-
LHR
1 stop6h 10m
Multiple Airlines
Sun 3/157:00 am
LHR
-
BFS
1 stop5h 45m
Multiple Airlines
Deal found 1/27$523
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 1/2910:10 am
BFS
-
LHR
1 stop6h 30m
Multiple Airlines
Sun 2/17:00 am
LHR
-
BFS
1 stop5h 45m
Multiple Airlines
Deal found 1/27$639
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/201:10 pm
BFS
-
LHR
2 stops6h 30m
Multiple Airlines
Sat 2/212:25 pm
LHR
-
BFS
1 stop5h 00m
Multiple Airlines
Deal found 1/26$650
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 4/1110:35 am
BFS
-
LHR
1 stop6h 00m
Multiple Airlines
Mon 4/133:50 pm
LHR
-
BFS
2 stops7h 45m
Multiple Airlines
Deal found 1/27$805
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 3/142:05 pm
BFS
-
LHR
1 stop7h 20m
Multiple Airlines
Sat 3/212:25 pm
LHR
-
BFS
1 stop5h 00m
Multiple Airlines
Deal found 1/28$816

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$523
(Kiwi.com)

One-way from

$142
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$163
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
Search Deals
Highest demand for flights based on searches. 11% 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 January 2026
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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 January 29, 2026.
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

Fri 3/13

7:30 am-1:40 pm

1 stop6h 10m

London Heathrow

Sun 3/15

7:00 am-12:45 pm

1 stop5h 45m

$523

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 2/20

1:10 pm-7:40 pm

2 stops6h 30m

London Heathrow

Sat 2/21

2:25 pm-7:25 pm

1 stop5h 00m

$650

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 4/11

10:35 am-4:35 pm

1 stop6h 00m

London Heathrow

Mon 4/13

3:50 pm-11:35 pm

2 stops7h 45m

$805

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 3/14

2:05 pm-9:25 pm

1 stop7h 20m

London Heathrow

Sat 3/21

2:25 pm-7:25 pm

1 stop5h 00m

$816

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 2/27

11:45 am-9:25 pm

2 stops9h 40m

$142

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 2/25

7:55 am-2:30 pm

2 stops6h 35m

$143

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 2/16

10:30 am-6:55 pm

2 stops8h 25m

$148

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 2/7

7:20 am-7:50 pm

2 stops12h 30m

$162

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 4/3

8:50 pm-8:05 am

2 stops11h 15m

$173

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 4/4

6:30 am-2:30 pm

2 stops8h 00m

$174

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 14 results
1
2
  • Most accurate provider: When it comes to deals on Belfast Intl Airport-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Belfast Intl Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 January 23, 2026.

Booking 77 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 $75). Flying from Belfast Intl Airport to London Heathrow Airport in February is currently the most expensive (average of $117). 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.

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 January 29, 2026.
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
7,705 reviews

Boarding

6.9

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,705 reviews
British Airways
6.7
Okay
7,705 reviews

Boarding

6.9

Overall

6.7

Comfort

6.8

Food

6.4

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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 $75). Flying from Belfast Intl Airport to London Heathrow Airport in February is currently the most expensive (average of $117). 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
Ilford
Hounslow
Southend-on-Sea
Harrow
Croydon
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$110Average$151FlexibilityNo cancel feeOn-time70%

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