HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$127+ 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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
May 19 — May 261
Tue 5/19
Tue 5/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Belfast Intl to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/159:05 am
BFS
-
LHR
1 stop10h 25m
Multiple Airlines
Sun 6/142:35 pm
LHR
-
BFS
2 stops8h 30m
Multiple Airlines
Deal found 4/15$362
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Wed 5/276:15 am
BFS
-
LHR
2 stops6h 25m
Multiple Airlines
Thu 5/288:30 pm
LHR
-
BFS
1 stop12h 10m
Multiple Airlines
Deal found 4/16$366
This Mytrip deal was found by Cheapflights users on 4/18. 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 5/198:10 pm
BFS
-
LHR
2 stops16h 35m
Multiple Airlines
Tue 5/266:00 am
LHR
-
BFS
2 stops17h 45m
Multiple Airlines
Deal found 4/18$373
This Mytrip deal was found by Cheapflights users on 4/14. 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.
Fri 5/15:40 am
BFS
-
LHR
2 stops28h 40m
Multiple Airlines
Tue 5/1911:20 am
LHR
-
BFS
2 stops12h 25m
Multiple Airlines
Deal found 4/14$452
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/159:05 am
BFS
-
LHR
1 stop10h 25m
Multiple Airlines
Sun 5/174:50 pm
LHR
-
BFS
2 stops6h 20m
Multiple Airlines
Deal found 4/17$469
This Mytrip deal was found by Cheapflights users on 4/17. 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 6/29:10 pm
BFS
-
LHR
2 stops23h 10m
Multiple Airlines
Tue 6/93:10 pm
LHR
-
BFS
2 stops7h 55m
Multiple Airlines
Deal found 4/17$496

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 April 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$362
(Kiwi.com)

One-way from

$127
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$224
Provider with most accurate pricing for Belfast Intl-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Belfast Intl-London Heathrow flights.
Search Deals
From Belfast Intl to London Heathrow
Search Deals
One-way flight from Belfast Intl to London Heathrow
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 19, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 5/15

9:05 am-7:30 pm

1 stop10h 25m

London Heathrow

Sun 6/14

2:35 pm-11:05 pm

2 stops8h 30m

$362
Quickest round-trip

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 5/27

6:15 am-12:40 pm

2 stops6h 25m

London Heathrow

Thu 5/28

8:30 pm-8:40 am

1 stop12h 10m

$366

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 5/19

8:10 pm-12:45 pm

2 stops16h 35m

London Heathrow

Tue 5/26

6:00 am-11:45 pm

2 stops17h 45m

$373

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 5/1

5:40 am-10:20 am

2 stops28h 40m

London Heathrow

Tue 5/19

11:20 am-11:45 pm

2 stops12h 25m

$452

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 6/2

9:10 pm-8:20 pm

2 stops23h 10m

London Heathrow

Tue 6/9

3:10 pm-11:05 pm

2 stops7h 55m

$496
Cheapest one-way

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 5/15

6:40 am-2:30 pm

2 stops7h 50m

$137
Quickest one-way

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 7/15

7:30 am-12:05 pm

1 stop4h 35m

$141

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 6/2

7:35 am-5:20 pm

2 stops9h 45m

$144

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 5/13

7:55 pm-9:05 am

2 stops13h 10m

$145

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 7/9

12:45 pm-5:30 pm

1 stop4h 45m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 15 resultsSorted by cheapest first
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 April 17, 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, October is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $155). Flying from Belfast Intl Airport to London Heathrow Airport in April is currently the most expensive (average of $224). 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.

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

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 April 19, 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
7,893 reviews

Comfort

6.8

Entertainment

6.4

Crew

7.7

Food

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.
British Airways
6.7
Okay
7,893 reviews
British Airways
6.7
Okay
7,893 reviews

Comfort

6.8

Entertainment

6.4

Crew

7.7

Food

6.4

Boarding

6.9

Overall

6.7

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2026

NCE - LHR

I was transferred to AA airlines with seating far away from my wif.

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 $121, 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, October is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $155). Flying from Belfast Intl Airport to London Heathrow Airport in April is currently the most expensive (average of $224). 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
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 April 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$121Average$256FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.