BFS - LHR

$99 Find Cheap Flights from Belfast Intl Airport to London Heathrow Airport - Compare and Save

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 7/27. 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

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Everything you should know

Cheapest round-trip
$317
Typical prices: $149-$256
Multiple Airlines
Wed 8/26Thu 8/27
BFS - LHR • 1 stop
Cheapest one-way
$99
Typical prices: $95-$122
Multiple Airlines
Mon 7/27
BFS - LHR • 1 stop
When to book
7 weeks
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 39% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
December
Cheapest • 13% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Wed, Aug 26 - Thu, Aug 27
Multiple Airlines Logo
5:45 pm - 9:10 am
BFS
-
LHR
15h 25m
1 stop
Multiple Airlines Logo
8:50 pm - 1:35 pm
LHR
-
BFS
16h 45m
1 stop
$317Multiple Airlines
Tue, Aug 25 - Wed, Sep 9
Multiple Airlines Logo
10:30 am - 6:55 pm
BFS
-
LHR
8h 25m
2 stops
Multiple Airlines Logo
8:50 pm - 9:45 am
LHR
-
BFS
12h 55m
1 stop
$328Multiple Airlines
Sun, Oct 4 - Sun, Oct 11
Multiple Airlines Logo
6:10 am - 8:05 pm
BFS
-
LHR
13h 55m
1 stop
Multiple Airlines Logo
8:50 pm - 8:40 am
LHR
-
BFS
11h 50m
1 stop
$360Multiple Airlines
Thu, Aug 13 - Wed, Aug 26
Multiple Airlines Logo
1:45 pm - 7:25 pm
BFS
-
LHR
5h 40m
2 stops
Multiple Airlines Logo
9:55 am - 12:05 am
LHR
-
BFS
14h 10m
1 stop
$405Multiple Airlines
Wed, Aug 26 - Thu, Aug 27
Multiple Airlines Logo
6:00 pm - 3:35 pm
BFS
-
LHR
21h 35m
2 stops
Multiple Airlines Logo
8:50 pm - 11:15 pm
LHR
-
BFS
26h 25m
2 stops
$453Multiple Airlines
Sat, Jul 25 - Sun, Aug 9
Multiple Airlines Logo
7:00 pm - 12:45 pm
BFS
-
LHR
17h 45m
2 stops
Multiple Airlines Logo
4:35 pm - 12:50 pm
LHR
-
BFS
20h 15m
2 stops
$472Multiple Airlines
Fri, Aug 7 - Thu, Aug 20
Multiple Airlines Logo
9:40 am - 5:20 pm
BFS
-
LHR
7h 40m
2 stops
Multiple Airlines Logo
8:30 pm - 8:40 am
LHR
-
BFS
12h 10m
1 stop
$489Multiple Airlines
Mon, Aug 3 - Fri, Aug 7
Multiple Airlines Logo
9:40 am - 8:05 pm
BFS
-
LHR
10h 25m
1 stop
Multiple Airlines Logo
3:50 pm - 9:45 pm
LHR
-
BFS
5h 55m
2 stops
$495Multiple Airlines
Sat, Jul 25 - Mon, Aug 10
Multiple Airlines Logo
7:00 pm - 12:45 pm
BFS
-
LHR
17h 45m
2 stops
Multiple Airlines Logo
8:00 am - 12:50 am
LHR
-
BFS
16h 50m
2 stops
$504Multiple Airlines
Thu, Aug 13 - Thu, Aug 27
Multiple Airlines Logo
6:20 am - 8:05 pm
BFS
-
LHR
13h 45m
2 stops
Multiple Airlines Logo
9:55 am - 10:30 pm
LHR
-
BFS
12h 35m
2 stops
$515Multiple 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 August.

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 Sundays 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 December, where tickets cost $155 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $199 and $192 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 7 weeks before departure, which saves you about 39% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Find deals

Good to know

Low seasonApril
Cheapest flight$99
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 11% 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 5 days, the lowest price for a flight from Belfast Intl Airport to London Heathrow Airport was $99 for a one-way ticket and $317 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 8105 reviews
6.9Boarding
7.7Crew
6.4Entertainment
6.8Comfort
6.4Food
Airline reviews

BA Canceled this flight and put us on a flight leaving Aberdeen at 8:00 PM, delaying our return to the states by a full day. The cancellation caused us expenses in both Aberdeen and London and BA was completely unhelpful on the phone and at the airport.

2.0 MediocreAnonymous, Jun 2026
ABZ - LHR
Read more British Airways reviews

BA Canceled this flight and put us on a flight leaving Aberdeen at 8:00 PM, delaying our return to the states by a full day. The cancellation caused us expenses in both Aberdeen and London and BA was completely unhelpful on the phone and at the airport.

The crew on the flight were not particularly pleasant and fluid restriction was an issue. I was not allowed to fill my water bottle. Crew didn't check on passengers other than meal service.

Entertainment system didn't work well. Also no new movies and limited choice of other programmes. . And only one USB A charger option. Most modern electronic items needs USB C. Planes should offer both

The space in the seat was okay, the staff were friendly, the entertainment system, my touch screen was not working and some of the films listed on the website for the flight were not available.

Big queues on arrival at airport despite having already checked in and only needed to drop bags off. Flight delayed which impacted on connecting flight.

The check-in baggage belt was broken (which is understandable) but what was surprising is they would check you in, give a baggage tag and then you have to drag the baggage to a different counter at the end of airport. No vegetarian option in in-flight meal. British Airways remains the worst big name airlines and always my last option while booking.

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

They are disorganized….show your flight info half an hour before take off, so you are running all over the place. Customer personnel are not helpful, and act like you are bothering them when you asked for assistance - very rude!!! My very first and last time flying with British airways… good thing we have other options.

There was no entertainment offered or expected, so please disregard my readings of that component. The flight was fantastic. Efficient boarding, takeoff, and even early arrival!

2 hour delay with very little information given. Horrible service by BA employees at Heathrow after we missed our connecting flight. Extremely disappointing experience!

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)