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$101+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
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 58 days in advance, depart on a Friday or Saturday and return on a Saturday

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 septiembre 15, 2025.

Round-trip from

$604
(Kiwi.com)

One-way from

$101
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$164
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. 12% potential increase in price ($24 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 September 2025
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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 septiembre 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
sáb. 9/279:05 amBFS - LHR
1 stop10h 25mMultiple Airlines
lun. 9/298:30 pmLHR - BFS
1 stop12h 20mMultiple Airlines
Deal found 9/15$604

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 septiembre 15, 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

sáb. 9/27

9:05 am-7:30 pm

1 stop10h 25m

London Heathrow

lun. 9/29

8:30 pm-8:50 am

1 stop12h 20m

$604

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

mié. 10/22

9:35 am-9:10 am

1 stop23h 35m

$101

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

mié. 12/10

7:10 am-5:15 pm

2 stops10h 05m

$116

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

jue. 11/6

7:00 am-1:25 pm

2 stops6h 25m

$141

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

vie. 10/3

10:55 am-9:45 pm

2 stops10h 50m

$150

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

jue. 2/12

7:00 am-2:25 pm

2 stops7h 25m

$185

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

jue. 10/9

10:30 am-9:30 pm

2 stops11h 00m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 September 12, 2025.

Booking 58 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, November is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $661). Flying from Belfast Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 septiembre 15, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 21% on flights from Belfast Intl Airport to London Heathrow Airport by exploring options for tickets in the afternoon.

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 septiembre 15, 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
7,361 reviews

Comfort

6.7

Food

6.3

Overall

6.7

Boarding

6.9

Crew

7.6

Entertainment

6.4

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
7,361 reviews
British Airways
6.7
Okay
7,361 reviews

Comfort

6.7

Food

6.3

Overall

6.7

Boarding

6.9

Crew

7.6

Entertainment

6.4

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 32% 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, November is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of $661). Flying from Belfast Intl Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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
Hayes
Southend-on-Sea
Harrow
Canterbury
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Wembley
Folkestone
Chichester

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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$110Average$151FlexibilityNo cancel feeOn-time70%

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