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

easyJet, at £34, was found to be the cheapest airline from Belfast Intl Airport to London Heathrow Airport. An alternate airline flying to your destination would be British Airways. easyJet is priced at 71% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

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

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

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

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

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

£75+ Flights from Belfast Intl Airport to London Heathrow Airport

Cheapflights Tip: The best prices from Belfast Intl to London Heathrow are usually found in January or March, booked 58 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Belfast Intl to Heathrow

Round-trip from	£177
One-way from	£75
Popular in	July
Cheapest in	January
Average price	£120

6/11-9/11
2 total stops
20h 00m total
Belfast to London

Search Deals

22/10
1 total stop
10h 30m total
Belfast to London

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£13 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Belfast Intl to Heathrow

Cheapest flights from Belfast Intl to Heathrow
Explore the most affordable flight options available from Belfast Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Thu 6/1110:35BFS - LHR

1 stop9h 05mMultiple Airlines

Sun 9/1121:05LHR - BFS

1 stop10h 55mMultiple Airlines

Deal found 17/9£177

Sat 1/1122:25BFS - LHR

1 stop9h 35mMultiple Airlines

Sat 8/1120:50LHR - BFS

2 stops15h 45mMultiple Airlines

Deal found 17/9£219

Sun 14/1217:00BFS - LHR

1 stop23h 40mMultiple Airlines

Wed 17/1215:30LHR - BFS

2 stops22h 35mMultiple Airlines

Deal found 16/9£221

Sat 4/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Sat 11/1006:15LHR - BFS

1 stop10h 25mMultiple Airlines

Deal found 17/9£245

Sat 11/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Mon 13/1006:15LHR - BFS

1 stop8h 40mMultiple Airlines

Deal found 16/9£254

Sun 2/1105:30BFS - LHR

1 stop7h 55mMultiple Airlines

Thu 6/1115:10LHR - BFS

2 stops7h 20mMultiple Airlines

Deal found 16/9£255

Sun 2/1105:30BFS - LHR

1 stop7h 55mMultiple Airlines

Wed 5/1112:10LHR - BFS

2 stops8h 05mMultiple Airlines

Deal found 16/9£262

Wed 15/1008:40BFS - LHR

2 stops7h 15mMultiple Airlines

Fri 17/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Deal found 16/9£265

Fri 31/1013:15BFS - LHR

1 stop6h 00mMultiple Airlines

Fri 7/1114:15LHR - BFS

2 stops8h 05mMultiple Airlines

Deal found 16/9£293

Best flights from Belfast Intl to Heathrow
Discover carefully curated flight deals from Belfast Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Thu 6/1110:35BFS - LHR

1 stop9h 05mMultiple Airlines

Sun 9/1121:05LHR - BFS

1 stop10h 55mMultiple Airlines

Deal found 17/9£177

Sat 1/1122:25BFS - LHR

1 stop9h 35mMultiple Airlines

Sat 8/1120:50LHR - BFS

2 stops15h 45mMultiple Airlines

Deal found 17/9£219

Wed 24/1214:35BFS - LHR

1 stop6h 15mMultiple Airlines

Thu 1/111:45LHR - BFS

1 stop9h 55mMultiple Airlines

Deal found 15/9£243

Sat 4/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Sat 11/1006:15LHR - BFS

1 stop10h 25mMultiple Airlines

Deal found 17/9£245

Mon 22/1209:55BFS - LHR

1 stop9h 20mMultiple Airlines

Thu 1/111:45LHR - BFS

1 stop9h 55mMultiple Airlines

Deal found 15/9£250

Sat 11/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Mon 13/1006:15LHR - BFS

1 stop8h 40mMultiple Airlines

Deal found 16/9£254

Sun 2/1105:30BFS - LHR

1 stop7h 55mMultiple Airlines

Thu 6/1115:10LHR - BFS

2 stops7h 20mMultiple Airlines

Deal found 16/9£255

Sun 2/1105:30BFS - LHR

1 stop7h 55mMultiple Airlines

Wed 5/1112:10LHR - BFS

2 stops8h 05mMultiple Airlines

Deal found 16/9£262

Wed 24/1214:35BFS - LHR

1 stop6h 15mMultiple Airlines

Mon 29/1206:30LHR - BFS

1 stop7h 10mMultiple Airlines

Deal found 15/9£262

Last-minute flights from Belfast Intl to Heathrow
Discover last-minute flight deals from Belfast Intl to Heathrow. Data last updated 18 September 2025 and is based on user searches.

Tue 23/914:50BFS - LHR

1 stop6h 35mMultiple Airlines

Sat 27/906:15LHR - BFS

1 stop5h 40mMultiple Airlines

Deal found 17/9£319

Sat 4/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Sat 11/1006:15LHR - BFS

1 stop10h 25mMultiple Airlines

Deal found 17/9£245

Mon 6/1010:05BFS - LHR

1 stop7h 30mMultiple Airlines

Thu 9/1011:45LHR - BFS

1 stop10h 40mMultiple Airlines

Deal found 17/9£324

Wed 8/1011:10BFS - LHR

2 stops10h 25mMultiple Airlines

Wed 15/1006:00LHR - BFS

2 stops10h 35mMultiple Airlines

Deal found 16/9£316

Sat 11/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Mon 13/1006:15LHR - BFS

1 stop8h 40mMultiple Airlines

Deal found 16/9£254

Mon 13/1008:40BFS - LHR

2 stops6h 15mMultiple Airlines

Mon 20/1006:15LHR - BFS

1 stop5h 55mMultiple Airlines

Deal found 15/9£240

Mon 13/1013:25BFS - LHR

2 stops20h 55mMultiple Airlines

Tue 14/1013:45LHR - BFS

2 stops20h 20mMultiple Airlines

Deal found 16/9£321

Wed 15/1008:40BFS - LHR

2 stops7h 15mMultiple Airlines

Fri 17/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Deal found 16/9£265

Fri 31/1013:15BFS - LHR

1 stop6h 00mMultiple Airlines

Fri 7/1114:15LHR - BFS

2 stops8h 05mMultiple Airlines

Deal found 16/9£293

One-way flights from Belfast Intl to Heathrow
Search for one-way flight options from Belfast Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Wed 22/1009:35BFS - LHR

1 stop10h 30mMultiple Airlines

Deal found 16/9£75

Mon 22/912:35BFS - LHR

1 stop25h 40mMultiple Airlines

Deal found 16/9£75

Sun 28/914:55BFS - LHR

1 stop23h 20mMultiple Airlines

Deal found 17/9£79

Fri 10/1010:55BFS - LHR

1 stop27h 20mMultiple Airlines

Deal found 16/9£89

Fri 3/1010:55BFS - LHR

1 stop27h 20mMultiple Airlines

Deal found 16/9£90

Wed 15/1008:40BFS - LHR

2 stops9h 40mMultiple Airlines

Deal found 16/9£92

Tue 23/914:50BFS - LHR

1 stop23h 25mMultiple Airlines

Deal found 17/9£93

Tue 14/1005:55BFS - LHR

2 stops8h 35mMultiple Airlines

Deal found 16/9£96

Mon 29/915:30BFS - LHR

1 stop22h 45mMultiple Airlines

Deal found 17/9£100

Sat 29/1112:45BFS - LHR

2 stops8h 20mMultiple Airlines

Deal found 16/9£101

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 6/11

10:35-19:40

1 stop9h 05m

London Heathrow

Sun 9/11

21:05-08:00

1 stop10h 55m

£177

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 1/11

22:25-08:00

1 stop9h 35m

London Heathrow

Sat 8/11

20:50-12:35

2 stops15h 45m

£219

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 24/12

14:35-20:50

1 stop6h 15m

London Heathrow

Thu 1/1

11:45-21:40

1 stop9h 55m

£243

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 4/10

12:35-21:25

1 stop8h 50m

London Heathrow

Sat 11/10

06:15-16:40

1 stop10h 25m

£245

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 22/12

09:55-19:15

1 stop9h 20m

London Heathrow

Thu 1/1

11:45-21:40

1 stop9h 55m

£250

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 11/10

12:35-21:25

1 stop8h 50m

London Heathrow

Mon 13/10

06:15-14:55

1 stop8h 40m

£254

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 2/11

05:30-13:25

1 stop7h 55m

London Heathrow

Thu 6/11

15:10-22:30

2 stops7h 20m

£255

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 2/11

05:30-13:25

1 stop7h 55m

London Heathrow

Wed 5/11

12:10-20:15

2 stops8h 05m

£262

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 24/12

14:35-20:50

1 stop6h 15m

London Heathrow

Mon 29/12

06:30-13:40

1 stop7h 10m

£262

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 22/10

09:35-20:05

1 stop10h 30m

£75

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 21 results

Best time to book a flight from Belfast Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Belfast Intl 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 Belfast Intl Airport to London Heathrow Airport

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

To ensure you get the cheapest price possible for a flight from Belfast Intl Airport to London Heathrow Airport, you should look to book at least 58 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £112). Flying from Belfast Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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 BFS to LHR?

It’s optimal to fly from Belfast Intl Airport to London Heathrow Airport in the evening. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at midday.

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

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

Reviews of airlines servicing Heathrow

Check out reviews from past customers who have flown with easyJet and British Airways from Belfast Intl Airport to London Heathrow 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

1,822 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Matt,Sept 2025

JTR - LGW

Boarding was a disaster. They are Nazis with the bags.

easyJet

6.9

Okay

1,822 reviews

easyJet

6.9

Okay

1,822 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Matt,Sept 2025

JTR - LGW

Boarding was a disaster. They are Nazis with the bags.

British Airways

6.7

Okay

7,367 reviews

easyJet

6.9

Okay

1,822 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Matt,Sept 2025

JTR - LGW

Boarding was a disaster. They are Nazis with the bags.

Related info for your journey

What are the cheapest airlines flying from Belfast Intl Airport to London Heathrow Airport round-trip?
easyJet, at £34, was found to be the cheapest airline from Belfast Intl Airport to London Heathrow Airport. An alternate airline flying to your destination would be British Airways. easyJet is priced at 71% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Belfast Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on Belfast Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Belfast Intl to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast Intl to Heathrow.
Can I find deals for business class flights from Belfast Intl to Heathrow?
Yes. Cheapflights offers flight deals from Belfast Intl to Heathrow 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 Belfast Intl Airport to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £112). Flying from Belfast Intl Airport to London Heathrow Airport in August is currently the most expensive (average of £164). 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

Milton Keynes

Croydon

Hounslow

Slough

Gatwick

Northampton

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Winchester

Chichester

Ipswich

Swindon

Dartford

Guildford

Brentford

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Belfast Intl to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£34	Average£65	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
British Airways	Cheapest£74	Average£123	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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

Cheapflights makes it easy to find Belfast Intl to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast Intl to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Belfast Intl to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights offers price alerts on Belfast Intl to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Belfast Intl Airport to London Heathrow Airport from £75

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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Belfast Intl to London Heathrow are usually found in January or March, booked 58 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Belfast Intl to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Belfast Intl to Heathrow

Cheapest flights from Belfast Intl to HeathrowExplore the most affordable flight options available from Belfast Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Explore the most affordable flight options available from Belfast Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Belfast Intl to Heathrow

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

Cheapflights Insights

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

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

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

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

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

Reviews of airlines servicing Heathrow

Check out reviews from past customers who have flown with easyJet and British Airways from Belfast Intl Airport to London Heathrow 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 Belfast Intl to Heathrow. 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 Belfast Intl Airport to London Heathrow Airport round-trip?

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

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

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

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

Travelling to a place near London Heathrow 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 Belfast Intl to Heathrow

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

Top 2 airlines flying from Belfast Intl to Heathrow

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 Belfast Intl to Heathrow?

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

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

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

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Cheapest flights from Belfast Intl to Heathrow
Explore the most affordable flight options available from Belfast Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.