BFS - LHR

$120 Find Cheap Flights from Belfast Intl Airport to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Heathrow departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to London, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Belfast Intl to Heathrow (BFS-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Belfast Intl to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Belfast Intl to Heathrow

Tue, Oct 21 - Thu, Oct 23
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9:15 am - 7:30 pmBFS-LHR
10h 15m1 stop
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1:25 pm - 7:25 pmLHR-BFS
6h 00m2 stops
$449
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Wed, Sep 24 - Tue, Oct 14
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7:05 am - 9:05 amBFS-LHR
26h 00m2 stops
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9:10 pm - 12:55 amLHR-BFS
27h 45m2 stops
$932
Find Deal

Everything you should know

When to book
6 weeks
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 26% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$449
Overall average: $158
Multiple Airlines
Tue 10/21Thu 10/23
BFS - LHR • 1 stop
Cheapest one-way
$120
Typical prices: $79-198
Multiple Airlines
Mon 12/15
BFS - LHR • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Heathrow!
Booking Insights

KAYAK's insights & trends for Belfast Intl to Heathrow flights

Get data-powered insights and trends into flights from Belfast Intl to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Belfast Intl Airport to London Heathrow Airport?

The average price of all round-trip flights from Belfast Intl Airport to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to London Heathrow Airport on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Belfast Intl Airport to London Heathrow Airport. For your return ticket, we recommend flying on a Sunday and avoiding Wednesdays for the best deals.

What is the cheapest month to fly from Belfast Intl Airport to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Belfast Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Belfast Intl Airport to London Heathrow Airport is January, where tickets cost $119 (return) on average. On the other hand, the most expensive months are August and July, where the average cost of round-trip tickets is $192 and $189 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Belfast Intl Airport to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Belfast Intl Airport to London Heathrow Airport, you should book around 6 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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Good to know

Low seasonFebruary
Cheapest flight$120
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Belfast Intl Airport to London Heathrow Airport

When to book flights from Belfast Intl to Heathrow

Are your dates flexible? Find out the best times to travel from Belfast Intl to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast Intl Airport to London Heathrow Airport flights

  • What is the cheapest flight from Belfast Intl Airport to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to London Heathrow Airport was $120 for a one-way ticket and $449 for a round-trip.

  • Do I need a passport to fly between Belfast Intl Airport and London Heathrow Airport?

    No, a passport isn't needed to fly from Belfast Intl Airport to London Heathrow Airport. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Belfast Intl Airport to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Belfast Intl Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Belfast Intl Airport with another airline. Booking your flights between Belfast Intl Airport and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Belfast Intl to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Belfast to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Belfast Intl to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.6
British AirwaysOverall score based on 7361 reviews
6.9Boarding
6.4Entertainment
6.7Comfort
6.3Food
7.6Crew
Airline reviews

The flight was good. It arrived at Heathrow on time but then there was no transport to take us to the terminal. We sat on the plane for an hour waiting for a bus. I will avoid Heathrow if possible in future. The crew were very apologetic.

8.0 ExcellentAnonymous, Sep 2025PSA - LHR
Read more British Airways reviews

The flight was good. It arrived at Heathrow on time but then there was no transport to take us to the terminal. We sat on the plane for an hour waiting for a bus. I will avoid Heathrow if possible in future. The crew were very apologetic.

we had to walk up stairs to get into the plane--no jetways. Perhaps that's a problem not with the airline but with facilities at Heathrow, Glasgow, and Edinburgh. But it was inconvenient.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Excellent service by the flight crew, and the food was relatively very good compared to other airlines.

Flight was excellent, staff was great. My first time in first class and it was very relaxing and comfortable.

They can separate the young children from people who want to have a rest. It had lots of crying and loud noises from the children.

I had an awful experience with British Airways as they broke the handle of my checked in suitcase and when I went to complain they told me that this was not their responsibility. This has to be one horrible airline that does not take responsibility for the damage that they have created

Didn’t fly with them as someone had cancelled my flight

Everything you need to know for your flight from Belfast Intl to Heathrow

Information on your arrival and departure airports

Belfast Intl Airport (BFS)
Heathrow (LHR)

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