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 3/25. 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, 0 bags

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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$392
Overall average: $206
Multiple Airlines
Thu 4/9Thu 4/16
BFS - LHR • 1 stop
Cheapest one-way
$130
Typical prices: $78-$194
Multiple Airlines
Wed 3/25
BFS - LHR • 2 stops
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 24% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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!
Flight Deals
Booking Insights
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

Thu, Apr 9 - Thu, Apr 16
Multiple Airlines Logo
8:10 am - 12:00 pm
BFS
-
LHR
3h 50m
1 stop
Multiple Airlines Logo
8:50 am - 1:00 pm
LHR
-
BFS
4h 10m
1 stop
$392Multiple Airlines
Fri, May 22 - Sun, May 31
Multiple Airlines Logo
5:20 pm - 10:20 am
BFS
-
LHR
17h 00m
2 stops
Multiple Airlines Logo
6:00 am - 9:45 am
LHR
-
BFS
27h 45m
2 stops
$508Multiple Airlines
Fri, Mar 20 - Sun, Mar 22
Multiple Airlines Logo
7:30 am - 1:40 pm
BFS
-
LHR
6h 10m
1 stop
Multiple Airlines Logo
7:00 am - 12:45 pm
LHR
-
BFS
5h 45m
1 stop
$642Multiple Airlines
Sat, Jun 20 - Sat, Jun 20
Multiple Airlines Logo
9:30 am - 5:20 pm
BFS
-
LHR
7h 50m
2 stops
Multiple Airlines Logo
7:50 pm - 8:40 pm
LHR
-
BFS
24h 50m
2 stops
$673Multiple Airlines
Sat, Jun 20 - Sat, Jun 20
Multiple Airlines Logo
8:45 am - 5:20 pm
BFS
-
LHR
8h 35m
2 stops
Multiple Airlines Logo
7:40 pm - 1:00 pm
LHR
-
BFS
17h 20m
2 stops
$752Multiple Airlines
Sun, Mar 15 - Sat, Mar 28
Multiple Airlines Logo
1:15 pm - 1:40 pm
BFS
-
LHR
24h 25m
2 stops
Multiple Airlines Logo
2:40 pm - 7:40 pm
LHR
-
BFS
29h 00m
2 stops
$909Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
12:00 pm - 6:40 pm
BFS
-
LHR
6h 40m
1 stop
Multiple Airlines Logo
11:05 am - 7:25 pm
LHR
-
BFS
8h 20m
2 stops
$919Multiple Airlines
Sat, Mar 21 - Sat, Mar 28
Multiple Airlines Logo
2:05 pm - 9:25 pm
BFS
-
LHR
7h 20m
1 stop
Multiple Airlines Logo
2:25 pm - 7:25 pm
LHR
-
BFS
5h 00m
1 stop
$1,039Multiple Airlines
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 Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday 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 Fridays 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 October, where tickets cost $132 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $206 and $206 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 5 weeks before departure, which saves you about 43% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$130
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 18% 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 $392 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.

  • Which airline alliances offer flights from Belfast Intl Airport to London Heathrow Airport?

    oneworld is the only airline alliance operating flights between Belfast Intl Airport and London Heathrow Airport.

  • 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.
6.7
British AirwaysOverall score based on 7764 reviews
7.6Crew
6.4Entertainment
6.9Boarding
6.8Comfort
6.4Food
Airline reviews

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

10.0 ExcellentAnonymous, Feb 2026
IAH - LHR
Read more British Airways reviews

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Food was good. For a long haul flight, there was “0” zero entertainment! What a disappointment. I do try to avoid BA. Next time its Emirates via Dubai to Cairo.

The internet was working on both sectors of the flight so hard to take the flight if you are on business.

Delays on take off, delays at gate on landing, lugging lost to the ether. power on seats not working, couldn't work due to that and no WiFi. The crew was great and boarding was orderly if confused and rushed.

Mumbai airport is a nightmare! Especially going from domestic to international terminal (2). I almost missed my flight. Then i could not check in because I purchased on kayak to British airways and my first flight was an indigo (non partner). So they called me when I was at the security outside the terminal and told me I had a middle seat, not what I paid for! After talking to the desk agent, they could not help but it finally worked out. A bit stressful for no reason. Probably never buy from kayak again this type pf complicated tickets (multi cities).

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

Easy, straightforward boarding process. Flight attendant was lovely and attentive, food was delicious - especially dinner, I had the roasted chicken in a mushroom sauce with potatoes - and entertainment selection was top notch. I would fly with BA again.

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

Crew was good. Seat was worn but overall okay. The infotainment system is outdated and needs to be updated. BA should provide free WiFi for club world/business class passengers.

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)