What are the cheapest airlines flying from London Heathrow Airport to Belfast Intl Airport round-trip?

Cheapflights users have booked flights from London Heathrow Airport to Belfast Intl Airport round-trip from £31. Another airline that can offer you cheap pricing is British Airways. These flights start at 76% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in Belfast Intl Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?

Yes. In addition to deals on Heathrow to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to Belfast Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Belfast Intl.

Can I find deals for business class flights from Heathrow to Belfast Intl?

Yes. Cheapflights offers flight deals from Heathrow to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£100+ Cheap Flights from London Heathrow Airport to Belfast Intl Airport

Cheapflights Tip: The best prices from London Heathrow to Belfast Intl are usually found in January or March, booked 61 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Heathrow to Belfast Intl

Round-trip from	£187
One-way from	£108
Popular in	July
Cheapest in	January
Average price	£145

27/11-4/12
2 total stops
19h 20m total
London to Belfast

Search Deals

16/12
1 total stop
23h 10m total
London to Belfast

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£12 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£2 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Heathrow to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Belfast Intl
Explore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.

Thu 27/1106:20LHR - BFS

1 stop9h 15mMultiple Airlines

Thu 4/1221:05BFS - LHR

1 stop10h 05mMultiple Airlines

Deal found 13/10£187

Tue 4/1110:55LHR - BFS

2 stops9h 00mMultiple Airlines

Tue 11/1121:35BFS - LHR

2 stops20h 25mMultiple Airlines

Deal found 13/10£215

Thu 11/1208:55LHR - BFS

1 stop5h 10mMultiple Airlines

Fri 12/1217:30BFS - LHR

1 stop14h 25mMultiple Airlines

Deal found 14/10£224

Fri 12/1220:05LHR - BFS

2 stops27h 45mMultiple Airlines

Sun 14/1208:15BFS - LHR

2 stops14h 05mMultiple Airlines

Deal found 13/10£231

Wed 19/1118:20LHR - BFS

2 stops13h 30mMultiple Airlines

Sun 23/1109:15BFS - LHR

2 stops12h 45mMultiple Airlines

Deal found 14/10£239

Sat 8/1106:30LHR - BFS

2 stops8h 40mMultiple Airlines

Sun 9/1123:05BFS - LHR

2 stops11h 40mMultiple Airlines

Deal found 13/10£249

Wed 12/1106:30LHR - BFS

2 stops9h 30mMultiple Airlines

Wed 19/1108:20BFS - LHR

2 stops10h 55mMultiple Airlines

Deal found 13/10£253

Fri 28/1118:50LHR - BFS

2 stops19h 15mMultiple Airlines

Fri 5/1207:05BFS - LHR

1 stop11h 15mMultiple Airlines

Deal found 14/10£264

Sat 22/1106:30LHR - BFS

2 stops8h 40mMultiple Airlines

Sun 23/1123:05BFS - LHR

2 stops11h 40mMultiple Airlines

Deal found 13/10£276

Best flights from Heathrow to Belfast Intl
Discover carefully curated flight deals from Heathrow to Belfast Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 15 October 2025.

Tue 4/1110:55LHR - BFS

2 stops9h 00mMultiple Airlines

Tue 11/1121:35BFS - LHR

2 stops20h 25mMultiple Airlines

Deal found 13/10£215

Fri 12/1220:05LHR - BFS

2 stops27h 45mMultiple Airlines

Sun 14/1208:15BFS - LHR

2 stops14h 05mMultiple Airlines

Deal found 13/10£231

Wed 19/1118:20LHR - BFS

2 stops13h 30mMultiple Airlines

Sun 23/1109:15BFS - LHR

2 stops12h 45mMultiple Airlines

Deal found 14/10£239

Wed 12/1106:30LHR - BFS

2 stops9h 30mMultiple Airlines

Wed 19/1108:20BFS - LHR

2 stops10h 55mMultiple Airlines

Deal found 13/10£253

Sat 22/1106:30LHR - BFS

2 stops8h 40mMultiple Airlines

Sun 23/1123:05BFS - LHR

2 stops11h 40mMultiple Airlines

Deal found 13/10£276

Fri 28/1114:45LHR - BFS

1 stop7h 20mMultiple Airlines

Fri 5/1214:20BFS - LHR

1 stop7h 05mMultiple Airlines

Deal found 14/10£287

Fri 6/206:20LHR - BFS

1 stop5h 40mMultiple Airlines

Sun 8/215:45BFS - LHR

1 stop5h 40mMultiple Airlines

Deal found 14/10£292

Thu 6/1109:00LHR - BFS

1 stop5h 20mMultiple Airlines

Tue 11/1108:05BFS - LHR

2 stops7h 30mMultiple Airlines

Deal found 14/10£297

Thu 20/1108:55LHR - BFS

1 stop5h 10mMultiple Airlines

Sun 23/1106:30BFS - LHR

1 stop7h 15mMultiple Airlines

Deal found 13/10£305

Last-minute flights from Heathrow to Belfast Intl
Discover last-minute flight deals from Heathrow to Belfast Intl. Data last updated 15 October 2025 and is based on user searches.

Tue 4/1110:55LHR - BFS

2 stops9h 00mMultiple Airlines

Tue 11/1121:35BFS - LHR

2 stops20h 25mMultiple Airlines

Deal found 13/10£215

Thu 6/1109:00LHR - BFS

1 stop5h 20mMultiple Airlines

Tue 11/1108:05BFS - LHR

2 stops7h 30mMultiple Airlines

Deal found 14/10£297

Sat 8/1106:30LHR - BFS

2 stops8h 40mMultiple Airlines

Sun 9/1123:05BFS - LHR

2 stops11h 40mMultiple Airlines

Deal found 13/10£249

Wed 12/1106:30LHR - BFS

2 stops9h 30mMultiple Airlines

Wed 19/1108:20BFS - LHR

2 stops10h 55mMultiple Airlines

Deal found 13/10£253

Wed 19/1118:20LHR - BFS

2 stops13h 30mMultiple Airlines

Sun 23/1109:15BFS - LHR

2 stops12h 45mMultiple Airlines

Deal found 14/10£239

Sat 22/1106:30LHR - BFS

2 stops8h 40mMultiple Airlines

Sun 23/1123:05BFS - LHR

2 stops11h 40mMultiple Airlines

Deal found 13/10£276

Tue 25/1108:50LHR - BFS

2 stops7h 45mMultiple Airlines

Sun 30/1114:45BFS - LHR

1 stop6h 05mMultiple Airlines

Deal found 14/10£301

Thu 27/1106:20LHR - BFS

1 stop9h 15mMultiple Airlines

Thu 4/1221:05BFS - LHR

1 stop10h 05mMultiple Airlines

Deal found 13/10£187

Fri 28/1118:50LHR - BFS

2 stops19h 15mMultiple Airlines

Fri 5/1207:05BFS - LHR

1 stop11h 15mMultiple Airlines

Deal found 14/10£264

One-way flights from Heathrow to Belfast Intl
Search for one-way flight options from Heathrow to Belfast Intl. Find affordable one-way fares based on user searches. Data last updated 15 October 2025.

Tue 16/1215:15LHR - BFS

1 stop23h 10mMultiple Airlines

Deal found 12/10£108

Tue 11/1122:05LHR - BFS

2 stops12h 15mMultiple Airlines

Deal found 12/10£110

Wed 12/1107:50LHR - BFS

2 stops6h 55mMultiple Airlines

Deal found 13/10£113

Mon 1/1210:55LHR - BFS

2 stops9h 20mMultiple Airlines

Deal found 13/10£113

Mon 15/1209:55LHR - BFS

2 stops12h 30mMultiple Airlines

Deal found 13/10£117

Fri 5/1215:10LHR - BFS

2 stops6h 50mMultiple Airlines

Deal found 13/10£119

Tue 21/1011:05LHR - BFS

2 stops9h 50mMultiple Airlines

Deal found 13/10£130

Wed 17/1207:50LHR - BFS

2 stops10h 00mMultiple Airlines

Deal found 13/10£132

Cheapflights Fare Finder

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

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Tue 4/11

10:55-19:55

2 stops9h 00m

Belfast Intl

Tue 11/11

21:35-18:00

2 stops20h 25m

£215

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 12/12

20:05-23:50

2 stops27h 45m

Belfast Intl

Sun 14/12

08:15-22:20

2 stops14h 05m

£231

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 19/11

18:20-07:50

2 stops13h 30m

Belfast Intl

Sun 23/11

09:15-22:00

2 stops12h 45m

£239

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 12/11

06:30-16:00

2 stops9h 30m

Belfast Intl

Wed 19/11

08:20-19:15

2 stops10h 55m

£253

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 22/11

06:30-15:10

2 stops8h 40m

Belfast Intl

Sun 23/11

23:05-10:45

2 stops11h 40m

£276

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 28/11

14:45-22:05

1 stop7h 20m

Belfast Intl

Fri 5/12

14:20-21:25

1 stop7h 05m

£287

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 6/2

06:20-12:00

1 stop5h 40m

Belfast Intl

Sun 8/2

15:45-21:25

1 stop5h 40m

£292

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 6/11

09:00-14:20

1 stop5h 20m

Belfast Intl

Tue 11/11

08:05-15:35

2 stops7h 30m

£297

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 20/11

08:55-14:05

1 stop5h 10m

Belfast Intl

Sun 23/11

06:30-13:45

1 stop7h 15m

£305

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Wed 25/2

18:50-14:05

2 stops19h 15m

£100

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 19 results

Best time to book a flight from Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Belfast Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Belfast Intl Airport?

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Belfast Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Belfast Intl Airport?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £40). Flying from London Heathrow Airport to Belfast Intl Airport in August is currently the most expensive (average of £87). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to BFS?

One of the essential ways to save on airfare from London Heathrow Airport to Belfast Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 16% on airfare.

What is the cheapest day to fly from London Heathrow Airport to Belfast Intl Airport?

Travellers seeking maximum savings on their London Heathrow Airport to Belfast Intl Airport flight should consider departing on Tuesday at midday when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Belfast Intl

Check out reviews from past customers who have flown with easyJet and British Airways from London Heathrow Airport to Belfast Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

easyJet

6.9

Okay

1,835 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .

easyJet

6.9

Okay

1,835 reviews

easyJet

6.9

Okay

1,835 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .

British Airways

6.7

Okay

7,457 reviews

easyJet

6.9

Okay

1,835 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

muhon,Oct 2025

MAN - GVA

Service and quality and the price is great .definitely recomondable .

Related info for your journey

What are the cheapest airlines flying from London Heathrow Airport to Belfast Intl Airport round-trip?
Cheapflights users have booked flights from London Heathrow Airport to Belfast Intl Airport round-trip from £31. Another airline that can offer you cheap pricing is British Airways. These flights start at 76% lower than the current average price 3 months from now.
Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?
Yes. In addition to deals on Heathrow to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Belfast Intl.
Can I find deals for business class flights from Heathrow to Belfast Intl?
Yes. Cheapflights offers flight deals from Heathrow to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Belfast Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £40). Flying from London Heathrow Airport to Belfast Intl Airport in August is currently the most expensive (average of £87). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Armagh

Newry

Ballymena

Cookstown

Dungannon

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Belfast Intl

Gatwick to Belfast Intl flights

Luton to Belfast Intl flights

Heathrow to Belfast City flights

London City to Belfast Intl flights

Gatwick to Belfast City flights

London City to Belfast City flights

Stansted to Belfast Intl flights

Stansted to Belfast City flights

Luton to Belfast City flights

Southend to Belfast Intl flights

Southend to Belfast City flights

Other flights to Belfast Intl

East Midlands to Belfast Intl flights

Manchester to Belfast Intl flights

Stansted to Belfast Intl flights

Leeds to Belfast Intl flights

Edinburgh to Belfast Intl flights

Liverpool to Belfast Intl flights

Belfast Intl Airport to London Gatwick Airport flights

Belfast Intl Airport to Newcastle upon Tyne flights

Belfast Intl Airport to Edinburgh flights

Belfast Intl Airport to Nottingham flights

Belfast Intl Airport to Liverpool flights

Belfast Intl Airport to Edinburgh flights

Belfast Intl Airport to Manchester flights

Belfast Intl Airport to Nottingham flights

Belfast Intl Airport to Bristol flights

Belfast Intl Airport to London Stansted Airport flights

Belfast Intl Airport to Birmingham flights

Belfast Intl Airport to London Stansted Airport flights

Belfast Intl Airport to Liverpool flights

Belfast Intl Airport to Glasgow Intl Airport flights

Belfast Intl Airport to Palma de Mallorca flights

Belfast Intl Airport to Faro flights

Belfast Intl Airport to Southampton flights

Top 2 airlines flying from Heathrow to Belfast Intl

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£31	Average£75	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
British Airways	Cheapest£80	Average£130	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Belfast Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast Intl from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Belfast Intl?

Cheapflights helps you find that perfect flight to Belfast Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Belfast Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Belfast Intl with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Heathrow today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London Heathrow Airport to Belfast Intl Airport from £100

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to Belfast Intl are usually found in January or March, booked 61 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Heathrow to Belfast Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Belfast Intl

Cheapest flights from Heathrow to Belfast IntlExplore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.

Explore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Belfast Intl Airport that are best for you.

Best time to book a flight from Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Belfast Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Belfast Intl Airport?

What is the cheapest month to book a flight from London Heathrow Airport to Belfast Intl Airport?

What is the cheapest time of day to fly from LHR to BFS?

What is the cheapest day to fly from London Heathrow Airport to Belfast Intl Airport?

Reviews of airlines servicing Belfast Intl

Check out reviews from past customers who have flown with easyJet and British Airways from London Heathrow Airport to Belfast Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Belfast Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from London Heathrow Airport to Belfast Intl Airport round-trip?

Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?

How can I find direct flights from Heathrow to Belfast Intl?

Can I find deals for business class flights from Heathrow to Belfast Intl?

What is the cheapest month to book a flight from London Heathrow Airport to Belfast Intl Airport?

Travelling to a place near Belfast Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Heathrow to Belfast Intl

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Belfast Intl?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Belfast Intl?

Can Cheapflights find flights from Heathrow to Belfast Intl with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Belfast Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Heathrow to Belfast Intl
Explore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.