BFS - LHR

$121 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 4/25. 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
$362
Typical prices: $200-$159
Multiple Airlines
Mon 5/11Mon 5/18
BFS - LHR • 1 stop
Cheapest one-way
$121
Typical prices: $117-$195
Multiple Airlines
Sat 4/25
BFS - LHR • 2 stops
When to book
in advance
Our data shows that travelers who book at least 6 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 14% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Mon, May 11 - Mon, May 18
Multiple Airlines Logo
4:10 pm - 9:45 am
BFS
-
LHR
17h 35m
1 stop
Multiple Airlines Logo
3:50 pm - 11:35 pm
LHR
-
BFS
7h 45m
2 stops
$362Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
2:20 pm - 6:00 pm
BFS
-
LHR
3h 40m
1 stop
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
$427Multiple Airlines
Sun, May 3 - Mon, May 18
Multiple Airlines Logo
5:05 pm - 9:00 pm
BFS
-
LHR
3h 55m
1 stop
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
$436Multiple Airlines
Sun, May 3 - Mon, May 18
Multiple Airlines Logo
6:10 am - 8:05 pm
BFS
-
LHR
13h 55m
1 stop
Multiple Airlines Logo
3:50 pm - 11:35 pm
LHR
-
BFS
7h 45m
2 stops
$441Multiple Airlines
Sun, May 3 - Mon, May 18
Multiple Airlines Logo
6:10 am - 8:05 pm
BFS
-
LHR
13h 55m
1 stop
Multiple Airlines Logo
3:50 pm - 11:35 pm
LHR
-
BFS
7h 45m
2 stops
$444Multiple Airlines
Mon, May 11 - Mon, May 18
Multiple Airlines Logo
2:20 pm - 6:00 pm
BFS
-
LHR
3h 40m
1 stop
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
$450Multiple Airlines
Fri, May 1 - Tue, May 19
Multiple Airlines Logo
5:40 am - 10:20 am
BFS
-
LHR
28h 40m
2 stops
Multiple Airlines Logo
11:20 am - 11:45 pm
LHR
-
BFS
12h 25m
2 stops
$452Multiple Airlines
Sun, May 3 - Mon, May 18
Multiple Airlines Logo
5:05 pm - 9:00 pm
BFS
-
LHR
3h 55m
1 stop
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
$459Multiple Airlines
Wed, May 6 - Wed, May 6
Multiple Airlines Logo
5:55 am - 4:00 pm
BFS
-
LHR
10h 05m
2 stops
Multiple Airlines Logo
9:10 pm - 3:00 pm
LHR
-
BFS
17h 50m
2 stops
$535Multiple Airlines
Sat, Apr 25 - Sun, May 31
Multiple Airlines Logo
8:30 am - 4:35 pm
BFS
-
LHR
8h 05m
2 stops
Multiple Airlines Logo
3:00 pm - 10:15 pm
LHR
-
BFS
7h 15m
1 stop
$676Multiple 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.

How much is a round-trip flight from Belfast Intl Airport to London Heathrow Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Belfast Intl Airport to London Heathrow Airport departing in May.

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 Monday, 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 $155 (return) on average. On the other hand, the most expensive months are April and July, where the average cost of round-trip tickets is $223 and $207 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 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$121
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 14% 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 $121 for a one-way ticket and $362 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 7885 reviews
6.4Food
6.4Entertainment
6.9Boarding
6.8Comfort
7.7Crew
Airline reviews

Overall ok. Best part has always been the sundae dessert.

6.0 GoodAnonymous, Apr 2026
ORD - LHR
Read more British Airways reviews

Overall ok. Best part has always been the sundae dessert.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

Was upgraded to business class on this flight, I presume due to my premium economy class for my London to Denver flight. Business class was the same seats as economy, only the middle seat was unfilled. Decent lunch served, and the lounge experience in Prague was good. The only heads up I would give is give yourself enough time for gate carry-on luggage scanning, which I did not anticipate in my time planning.

Overall good, bigger chairs in the future would be nice.

I loved the food choices and the attentiveness of the crew but boarding was chaotic.

Great flight, last one out the air-conditioning was far to hot and the return it was to cold and then issued blankets. On the outward bowned the headset connector didn't work properly. You had intermittent sound from the audio socket.

My experience with British Airways was fine and dandy. Nothing truly negative to report. However, I was. asked to check my carryon bag all the way through to my desitination which prompted some huge problems. Thank goodness I kept a foldable-personal-item-bag in my carryon. I was asked to remove my valuable electronic belongings from my personal item bag, which was a camera bag full of expensive lenses and camera equipment, into another bag for the flight because it was "too big". Farbeit from me for asking further questions, but the bag was let through when I departed to Paris from America with no problems at all as I was able to explain that it was slightly oversized due to being a camera bag with a layer of protective foam which made it slightly larger. Still, this bag could and did fit perfectly under my airplain seat during my departure from America. On the flight back though, this was not the case and I was asked to remove highly valuable personal items, stow my camera bag in my checked bag, and then had to pay and overweight fee. Kinda bogus, but I was tired and wanted to get home so I complied. Regardless, it would have been nice to have had my bag retrieved during the London to Pittsburgh flight so I could put on new clothes and freshen up before take off.

The staff was extremely friendly and nice. Overall, the flight was pleasant, and the food was good. They asked me to check in my smaller cabin luggage suitcase in Mumbai as the flight was full. Fortunately, I had packed a spare set of clothes in my laptop bag so I was okay.

Flight was delayed by over two hours and that meant my connecting flight was in jeopardy but there was no acknowledgement or help from the BA staff

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

Information on your arrival and departure airports