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Cheap flights from London Heathrow Airport to Belfast from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Belfast departing on 6/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from London Heathrow Airport to Belfast

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
Multiple Airlines Logo
10:55 am - 3:00 pm
BFS
-
LHR
4h 05m
1 stop
$305Multiple Airlines
Mon, Jun 8 - Wed, Jun 10
Multiple Airlines Logo
12:05 pm - 3:35 pm
LHR
-
BFS
3h 30m
1 stop
Multiple Airlines Logo
8:10 am - 12:05 pm
BFS
-
LHR
3h 55m
1 stop
$352Multiple Airlines
Tue, May 19 - Wed, May 27
Multiple Airlines Logo
6:00 pm - 9:25 pm
LHR
-
BFS
3h 25m
1 stop
Multiple Airlines Logo
12:45 pm - 5:30 pm
BFS
-
LHR
4h 45m
1 stop
$355Multiple Airlines
Sun, Jul 5 - Thu, Jul 9
Multiple Airlines Logo
6:20 pm - 9:50 pm
LHR
-
BFS
3h 30m
1 stop
Multiple Airlines Logo
7:35 am - 1:25 pm
BFS
-
LHR
5h 50m
1 stop
$400Multiple Airlines
Mon, Sep 14 - Tue, Sep 15
Multiple Airlines Logo
3:10 pm - 9:45 pm
LHR
-
BFS
6h 35m
2 stops
Multiple Airlines Logo
9:05 am - 7:30 pm
BFS
-
LHR
10h 25m
1 stop
$419Multiple Airlines
Fri, May 15 - Fri, May 22
Multiple Airlines Logo
3:50 pm - 10:25 pm
LHR
-
BFS
6h 35m
2 stops
Multiple Airlines Logo
9:35 am - 8:05 pm
BFS
-
LHR
10h 30m
1 stop
$450Multiple Airlines
Tue, May 19 - Wed, May 27
Multiple Airlines Logo
3:50 pm - 9:45 pm
LHR
-
BFS
5h 55m
2 stops
Multiple Airlines Logo
6:10 am - 8:05 pm
BFS
-
LHR
13h 55m
1 stop
$456Multiple Airlines
Fri, May 8 - Sun, May 17
Multiple Airlines Logo
8:45 am - 12:30 pm
LHR
-
BFS
3h 45m
1 stop
Multiple Airlines Logo
5:05 pm - 9:00 pm
BFS
-
LHR
3h 55m
1 stop
$560Multiple Airlines
Fri, May 8 - Sun, May 17
Multiple Airlines Logo
7:50 pm - 8:40 pm
LHR
-
BFS
24h 50m
2 stops
Multiple Airlines Logo
9:40 pm - 2:45 pm
BFS
-
LHR
17h 05m
2 stops
$707Multiple Airlines
Sat, May 2 - Sat, May 16

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momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport to Belfast Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 6/8

6:20 pm-9:50 pm

1 stop3h 30m

Belfast Intl

Wed 6/10

10:55 am-3:00 pm

1 stop4h 05m

$305
Quickest round-trip

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 5/19

12:05 pm-3:35 pm

1 stop3h 30m

Belfast Intl

Wed 5/27

8:10 am-12:05 pm

1 stop3h 55m

$352

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 7/5

6:00 pm-9:25 pm

1 stop3h 25m

Belfast Intl

Thu 7/9

12:45 pm-5:30 pm

1 stop4h 45m

$355

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 9/14

6:20 pm-9:50 pm

1 stop3h 30m

Belfast Intl

Tue 9/15

7:35 am-1:25 pm

1 stop5h 50m

$400

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 5/15

3:10 pm-9:45 pm

2 stops6h 35m

Belfast Intl

Fri 5/22

9:05 am-7:30 pm

1 stop10h 25m

$419

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 5/19

3:50 pm-10:25 pm

2 stops6h 35m

Belfast Intl

Wed 5/27

9:35 am-8:05 pm

1 stop10h 30m

$450

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 5/8

3:50 pm-9:45 pm

2 stops5h 55m

Belfast Intl

Sun 5/17

6:10 am-8:05 pm

1 stop13h 55m

$456

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 5/8

8:45 am-12:30 pm

1 stop3h 45m

Belfast Intl

Sun 5/17

5:05 pm-9:00 pm

1 stop3h 55m

$560

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 5/2

7:50 pm-8:40 pm

2 stops24h 50m

Belfast Intl

Sat 5/16

9:40 pm-2:45 pm

2 stops17h 05m

$707
Cheapest one-way

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 6/28

3:00 pm-6:25 pm

1 stop27h 25m

$118

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from London Heathrow Airport to Belfast Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Belfast Intl Airport?

What is the cheapest month to fly to Belfast Intl Airport?

The month of November is, on average, the cheapest month to fly to Belfast Intl Airport from London Heathrow Airport, with most prices found around $152. If you’re not able to fly to Belfast Intl Airport in November, then January is your next best option. Flight prices from London Heathrow Airport to Belfast Intl Airport during January average around $178.

What is the cheapest day to depart on your flight to Belfast Intl Airport?

The cheapest day to depart on your flight to Belfast Intl Airport is on a Monday when prices can be found for as low as $73. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to Belfast Intl Airport for around $137.

What is the cheapest time of day to depart on your flight to Belfast Intl Airport?

In the evening is the cheapest time of day to fly from London Heathrow Airport to Belfast Intl Airport when you can find flight prices for as low as $141. Flying to Belfast Intl Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Belfast Intl Airport is at noon when prices are around $228.

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

You are more likely to see cheaper flights to Belfast Intl Airport from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Belfast Intl Airport for around $193 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belfast Intl Airport from London Heathrow Airport for as low as $133 on momondo.

How have London Heathrow Airport to Belfast Intl Airport flight prices changed over time?

As of April 2026, prices for London Heathrow Airport to Belfast Intl Airport flights are approximately 62% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Belfast Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Belfast Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Heathrow Airport to Belfast Intl Airport (LHR to BFS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Belfast Intl Airport

Fastest flight time

1h 20m

Direct flights

None
The fastest flight from London Heathrow Airport to Belfast Intl Airport takes 1h 20m
There are no direct flights from London Heathrow Airport to Belfast Intl Airport. There are no popular flight routes from London Heathrow Airport to Belfast Intl Airport.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Belfast Intl Airport

  • How far is London Heathrow to Belfast Intl by plane?

    The straight-line distance from London Heathrow to Belfast Intl is 324.6 mi. 1h 20m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Belfast Intl Airport?

    Prices for flights from London Heathrow Airport to Belfast Intl Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Belfast Intl Airport?

  • How old do you have to be to fly from London Heathrow Airport to Belfast Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Belfast Intl Airport.

  • What documentation or ID do you need to fly to Belfast Intl Airport?

    The required travel and health documents for your Belfast Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Belfast Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Belfast Intl Airport?

Best airlines flying from London Heathrow Airport to Belfast Intl Airport

Compare and see reviews for airlines that fly from London Heathrow Airport to Belfast Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $125Free CancellationRating
6.7
7,892 reviews
Search British Airways flights

Traveling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
Armagh
Cookstown
Ballymena
Newry
Dungannon

Why use momondo?

Why should I use momondo to find a flight deal from London to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Belfast. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Belfast with flexible booking policies on momondo?

Flights from London to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Belfast?

momondo provides multiple filters to help you find the best flight to Belfast from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Belfast right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Belfast from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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