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Cheap flights from London Heathrow Airport to Belfast from £69

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 7/5. 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

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Find the cheapest flights from London Heathrow Airport to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:45 - 16:15
LHR
-
BFS
19h 30m
1 stop
Multiple Airlines Logo
07:30 - 21:50
BFS
-
LHR
14h 20m
1 stop
£173Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
15:50 - 23:00
LHR
-
BFS
7h 10m
2 stops
Multiple Airlines Logo
06:15 - 14:15
BFS
-
LHR
8h 00m
1 stop
£230Multiple Airlines
Wed, 13 May - Wed, 27 May
Multiple Airlines Logo
12:05 - 15:35
LHR
-
BFS
3h 30m
1 stop
Multiple Airlines Logo
15:40 - 20:50
BFS
-
LHR
5h 10m
1 stop
£242Multiple Airlines
Tue, 7 Jul - Wed, 8 Jul
Multiple Airlines Logo
08:55 - 15:05
LHR
-
BFS
6h 10m
1 stop
Multiple Airlines Logo
10:55 - 20:20
BFS
-
LHR
9h 25m
2 stops
£247Multiple Airlines
Fri, 29 May - Wed, 3 Jun
Multiple Airlines Logo
13:45 - 16:35
LHR
-
BFS
26h 50m
2 stops
Multiple Airlines Logo
20:10 - 18:50
BFS
-
LHR
22h 40m
2 stops
£254Multiple Airlines
Wed, 13 May - Tue, 19 May
Multiple Airlines Logo
18:15 - 21:40
LHR
-
BFS
3h 25m
1 stop
Multiple Airlines Logo
10:55 - 15:00
BFS
-
LHR
4h 05m
1 stop
£257Multiple Airlines
Fri, 29 May - Wed, 3 Jun
Multiple Airlines Logo
18:00 - 21:25
LHR
-
BFS
3h 25m
1 stop
Multiple Airlines Logo
17:05 - 21:10
BFS
-
LHR
4h 05m
1 stop
£261Multiple Airlines
Sun, 9 Aug - Fri, 14 Aug
Multiple Airlines Logo
17:10 - 22:50
LHR
-
BFS
5h 40m
1 stop
Multiple Airlines Logo
10:30 - 20:50
BFS
-
LHR
10h 20m
1 stop
£272Multiple Airlines
Fri, 8 May - Tue, 12 May
Multiple Airlines Logo
17:35 - 22:50
LHR
-
BFS
5h 15m
1 stop
Multiple Airlines Logo
14:45 - 21:25
BFS
-
LHR
6h 40m
1 stop
£276Multiple Airlines
Fri, 8 May - Tue, 12 May
Multiple Airlines Logo
18:00 - 22:20
LHR
-
BFS
4h 20m
1 stop
Multiple Airlines Logo
14:20 - 18:00
BFS
-
LHR
3h 40m
1 stop
£280Multiple Airlines
Thu, 27 Aug - Mon, 31 Aug

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Customise 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 279,928 searches. Data last updated 15 April 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 return flight

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 12/5

20:45-16:15

1 stop19h 30m

Belfast Intl

Tue 19/5

07:30-21:50

1 stop14h 20m

£173

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 13/5

15:50-23:00

2 stops7h 10m

Belfast Intl

Wed 27/5

06:15-14:15

1 stop8h 00m

£230

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 7/7

12:05-15:35

1 stop3h 30m

Belfast Intl

Wed 8/7

15:40-20:50

1 stop5h 10m

£242

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 29/5

08:55-15:05

1 stop6h 10m

Belfast Intl

Wed 3/6

10:55-20:20

2 stops9h 25m

£246

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 13/5

13:45-16:35

2 stops26h 50m

Belfast Intl

Tue 19/5

20:10-18:50

2 stops22h 40m

£254
Fastest return journey

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 29/5

18:15-21:40

1 stop3h 25m

Belfast Intl

Wed 3/6

10:55-15:00

1 stop4h 05m

£257

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sun 9/8

18:00-21:25

1 stop3h 25m

Belfast Intl

Fri 14/8

17:05-21:10

1 stop4h 05m

£261

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 8/5

17:10-22:50

1 stop5h 40m

Belfast Intl

Tue 12/5

10:30-20:50

1 stop10h 20m

£272

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 8/5

17:35-22:50

1 stop5h 15m

Belfast Intl

Tue 12/5

14:45-21:25

1 stop6h 40m

£276

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 27/8

18:00-22:20

1 stop4h 20m

Belfast Intl

Mon 31/8

14:20-18:00

1 stop3h 40m

£280

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 £112. 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 £131.

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

The cheapest day to depart from London Heathrow Airport to Belfast Intl Airport is on a Tuesday when prices can be found for as low as £62. The most expensive day to fly to Belfast Intl Airport is Friday, with ticket prices averaging around £81.

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

The cheapest time of day to fly to Belfast Intl Airport is in the morning when flights can be purchased for as low as £92. At midday is when there is more demand to fly to Belfast Intl Airport, so prices are often more expensive at around £122 per ticket.

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 £142 when searching weeks before you fly. 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 £98 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 58% 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 return 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.
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Frequently asked questions about flying from London Heathrow Airport to Belfast Intl Airport

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

    A flight from London Heathrow to Belfast Intl will travel around 324.6 mi. Typically, this will take 1h 20m by plane in normal conditions.

  • 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 refresh daily.

  • 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 for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Belfast Intl Airport.

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

    The travel and health documents you'll need for your trip to Belfast Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast Intl Airport. It is always advisable to seek advice from your airline or a trusted 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
easyJetPriceFrom £34Free CancellationRating
6.9
1,890 reviews
Search easyJet flights
RyanairPriceFrom £35Free CancellationRating
6.5
127 reviews
Search Ryanair flights
British AirwaysPriceFrom £88Free CancellationRating
6.7
7,885 reviews
Search British Airways flights

Travelling to a place near Belfast?

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

Why use momondo?

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

It is quick and easy to find London to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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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