BFS - LHR

$130 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 7/23. 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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Flights 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

Thu, Sep 4 - Fri, Sep 5
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5:20 pm - 9:45 pmBFS-LHR
4h 25m1 stop
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6:05 pm - 11:30 pmLHR-BFS
5h 25m1 stop
$303
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Mon, Jul 14 - Wed, Jul 16
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4:20 pm - 9:50 pmBFS-LHR
5h 30m1 stop
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6:45 am - 4:40 pmLHR-BFS
9h 55m1 stop
$305
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Sun, Jul 27 - Mon, Jul 28
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5:55 pm - 10:25 pmBFS-LHR
4h 30m1 stop
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6:15 am - 1:00 pmLHR-BFS
6h 45m1 stop
$337
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Wed, Jul 23 - Mon, Jul 28
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9:50 pm - 8:10 amBFS-LHR
10h 20m1 stop
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6:45 am - 11:55 amLHR-BFS
5h 10m1 stop
$341
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Tue, Jun 24 - Tue, Jul 1
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5:50 pm - 9:45 pmBFS-LHR
3h 55m1 stop
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10:00 pm - 7:05 amLHR-BFS
9h 05m1 stop
$520
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Thu, Jul 17 - Wed, Jul 23
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4:40 pm - 9:50 pmBFS-LHR
5h 10m1 stop
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8:20 am - 1:15 pmLHR-BFS
4h 55m1 stop
$557
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Mon, Jun 23 - Wed, Jun 25
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12:35 pm - 10:10 pmBFS-LHR
9h 35m1 stop
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1:10 pm - 5:15 pmLHR-BFS
4h 05m1 stop
$562
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Mon, Jun 30 - Wed, Jul 16
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3:25 pm - 5:40 pmBFS-LHR
26h 15m2 stops
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1:30 pm - 11:40 amLHR-BFS
22h 10m2 stops
$811
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Useful Info

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 Tuesday 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 July and June, where the average cost of round-trip tickets is $194 and $188 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. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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Good to know

Low seasonMarch
High seasonJuly
Cheapest flight$130
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 21% 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 $130 for a one-way ticket and $303 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.

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 7008 reviews
6.3Food
6.8Boarding
6.4Entertainment
6.7Comfort
7.6Crew
Airline reviews

The payment system was not working so was unable to connect wifi the entire flight

6.0 GoodDaniel, Jun 2025JFK - LHR
Read more British Airways reviews

The payment system was not working so was unable to connect wifi the entire flight

The boarding call announcements versus the Staff announcements versus the digital signage board on the out-going and returning flights WERE NOT IN SYNC. I was sent through check and re-checks 3 times. WHY?

Absolutely the worst airline. Can’t find anything positive to say. We were in business which is the same as most airlines coach

everything to do with KAYAK was terrible. Your customer facing departments are utterly useless, timewasting and unhelpful.

I ordered short ribs for main course. It tasted sweet, really sweet. Horrible.

When checking our bags we were told our bags would go through our final destination. This did not happen. When boarding, after group 3 it was a free for all, everyone boards. When served lunch, I asked for anything without dairy, I was given popcorn and gummy snacks. She said she would come back with more options, she never did. Also, when traveling through London, they don’t tell you your gate number until 1 hour before flight leaves, causing everyone to run to their gate.

Full flight, but crew was great. No wifi and no seatback entertainment, so had to read...argh!

The screen didn’t work and I didn’t get the seat upgrade I paid $300 for. They were no help with that,

The crew did not really interact with me which was no problem as I was fine. I did see that they were somewhat short with some passengers but that was not common. Just in general, they did not seem friendly - no requirement to be so but I am used to a friendly crew on most flights. The food was just ok but with a flight that large, I would think it hard to make something more elaborate.

Paid $180 for seat selection, and selection essnt honored. Have to call for a refund.

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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