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 £30. 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).

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

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 15% on the overall cost on flights from London Heathrow Airport to Belfast Intl Airport.

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

January is one of the best times of the year to fly to Belfast Intl Airport from London Heathrow Airport. Prices for January average £65 per person but you can even find prices for as low as £27. The most expensive prices can be found in the month of July. Opting for a January flight can save you 84% on your journey compared to booking in July

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.

£89+ Cheap Flights from London Heathrow Airport to Belfast Intl Airport

Q: How far in advance should I book a flight from London Heathrow Airport to Belfast Intl Airport?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 44 days in advance, which can save you up to 152% on flights from London Heathrow Airport to Belfast Intl Airport compared to booking the week you need them. Waiting 44 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £64. For sooner than that we have options available in the next 3 days from £105.

Cheapflights Tip: The best prices from London Heathrow to Belfast Intl are usually found in January or March, booked 66 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	£202
One-way from	£89
Popular in	July
Cheapest in	January
Average price	£117

11/10-13/10
2 total stops
16h 20m total
London to Belfast

Search Deals

18/9
1 total stop
23h 25m total
London to Belfast

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£16 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Heathrow to Belfast Intl

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 12 September 2025.

Sat 11/1006:15LHR - BFS

1 stop10h 25mMultiple Airlines

Mon 13/1015:30BFS - LHR

1 stop5h 55mMultiple Airlines

Deal found 11/9£202

Tue 14/1015:50LHR - BFS

2 stops6h 05mMultiple Airlines

Wed 15/1009:35BFS - LHR

1 stop10h 30mMultiple Airlines

Deal found 10/9£213

Fri 14/1108:40LHR - BFS

1 stop5h 00mMultiple Airlines

Mon 17/1109:55BFS - LHR

1 stop6h 10mMultiple Airlines

Deal found 10/9£249

Sat 4/1009:00LHR - BFS

1 stop7h 40mMultiple Airlines

Tue 7/1014:50BFS - LHR

1 stop6h 35mMultiple Airlines

Deal found 11/9£251

Thu 13/1108:50LHR - BFS

2 stops6h 40mMultiple Airlines

Sun 16/1114:45BFS - LHR

1 stop4h 30mMultiple Airlines

Deal found 11/9£258

Sat 27/906:15LHR - BFS

1 stop5h 40mMultiple Airlines

Sat 4/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Deal found 10/9£260

Mon 3/1112:10LHR - BFS

2 stops8h 35mMultiple Airlines

Mon 24/1109:55BFS - LHR

1 stop7h 05mMultiple Airlines

Deal found 10/9£261

Sun 12/1011:30LHR - BFS

1 stop7h 35mMultiple Airlines

Tue 14/1014:50BFS - LHR

1 stop6h 35mMultiple Airlines

Deal found 10/9£269

Fri 21/1106:30LHR - BFS

1 stop7h 10mMultiple Airlines

Sun 23/1114:45BFS - LHR

1 stop4h 30mMultiple Airlines

Deal found 11/9£273

Fri 21/1108:40LHR - BFS

1 stop5h 00mMultiple Airlines

Mon 24/1109:55BFS - LHR

1 stop6h 10mMultiple Airlines

Deal found 11/9£274

Fri 7/1106:30LHR - BFS

1 stop7h 10mMultiple Airlines

Sun 9/1114:45BFS - LHR

1 stop6h 05mMultiple Airlines

Deal found 10/9£275

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 12 September 2025.

Tue 14/1015:50LHR - BFS

2 stops6h 05mMultiple Airlines

Wed 15/1009:35BFS - LHR

1 stop10h 30mMultiple Airlines

Deal found 10/9£213

Fri 14/1108:40LHR - BFS

1 stop5h 00mMultiple Airlines

Mon 17/1109:55BFS - LHR

1 stop6h 10mMultiple Airlines

Deal found 10/9£249

Sat 4/1009:00LHR - BFS

1 stop7h 40mMultiple Airlines

Tue 7/1014:50BFS - LHR

1 stop6h 35mMultiple Airlines

Deal found 11/9£251

Mon 3/1112:10LHR - BFS

2 stops8h 35mMultiple Airlines

Mon 24/1109:55BFS - LHR

1 stop7h 05mMultiple Airlines

Deal found 10/9£261

Fri 21/1106:30LHR - BFS

1 stop7h 10mMultiple Airlines

Sun 23/1114:45BFS - LHR

1 stop4h 30mMultiple Airlines

Deal found 11/9£274

Fri 3/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Sun 5/1013:20BFS - LHR

1 stop7h 35mMultiple Airlines

Deal found 10/9£281

Thu 2/1009:00LHR - BFS

1 stop10h 05mMultiple Airlines

Mon 6/1015:30BFS - LHR

1 stop5h 55mMultiple Airlines

Deal found 10/9£283

Sat 25/1017:00LHR - BFS

2 stops28h 45mMultiple Airlines

Sun 2/1121:10BFS - LHR

2 stops20h 30mMultiple Airlines

Deal found 10/9£286

Thu 8/108:55LHR - BFS

1 stop5h 10mMultiple Airlines

Sun 11/115:45BFS - LHR

1 stop5h 40mMultiple Airlines

Deal found 11/9£292

Thu 2/1014:45LHR - BFS

1 stop7h 40mMultiple Airlines

Sun 5/1013:20BFS - LHR

1 stop7h 35mMultiple Airlines

Deal found 10/9£293

Last-minute flights from Heathrow to Belfast Intl
Discover last-minute flight deals from Heathrow to Belfast Intl. Data last updated 12 September 2025 and is based on user searches.

Sat 27/906:15LHR - BFS

1 stop5h 40mMultiple Airlines

Sat 4/1012:35BFS - LHR

1 stop8h 50mMultiple Airlines

Deal found 10/9£260

Thu 2/1009:00LHR - BFS

1 stop10h 05mMultiple Airlines

Mon 6/1015:30BFS - LHR

1 stop5h 55mMultiple Airlines

Deal found 10/9£283

Thu 2/1014:45LHR - BFS

1 stop7h 40mMultiple Airlines

Sun 5/1013:20BFS - LHR

1 stop7h 35mMultiple Airlines

Deal found 10/9£293

Fri 3/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Sun 5/1013:20BFS - LHR

1 stop7h 35mMultiple Airlines

Deal found 10/9£281

Sat 4/1009:00LHR - BFS

1 stop7h 40mMultiple Airlines

Tue 7/1014:50BFS - LHR

1 stop6h 35mMultiple Airlines

Deal found 11/9£251

Sat 11/1006:15LHR - BFS

1 stop10h 25mMultiple Airlines

Mon 13/1015:30BFS - LHR

1 stop5h 55mMultiple Airlines

Deal found 11/9£202

Sun 12/1011:30LHR - BFS

1 stop7h 35mMultiple Airlines

Tue 14/1014:50BFS - LHR

1 stop6h 35mMultiple Airlines

Deal found 10/9£269

Tue 14/1015:50LHR - BFS

2 stops6h 05mMultiple Airlines

Wed 15/1009:35BFS - LHR

1 stop10h 30mMultiple Airlines

Deal found 10/9£213

Fri 17/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Sun 19/1013:20BFS - LHR

1 stop6h 10mMultiple Airlines

Deal found 11/9£298

Sat 25/1017:00LHR - BFS

2 stops28h 45mMultiple Airlines

Sun 2/1121:10BFS - LHR

2 stops20h 30mMultiple Airlines

Deal found 10/9£286

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 12 September 2025.

Thu 18/915:05LHR - BFS

1 stop23h 25mMultiple Airlines

Deal found 11/9£89

Sun 21/915:05LHR - BFS

1 stop23h 50mMultiple Airlines

Deal found 11/9£100

Tue 7/1015:50LHR - BFS

2 stops7h 05mMultiple Airlines

Deal found 10/9£109

Tue 23/920:50LHR - BFS

1 stop19h 05mMultiple Airlines

Deal found 11/9£115

Thu 6/1108:50LHR - BFS

2 stops7h 20mMultiple Airlines

Deal found 10/9£123

Thu 2/1015:50LHR - BFS

2 stops17h 20mMultiple Airlines

Deal found 11/9£123

Wed 24/920:50LHR - BFS

2 stops12h 20mMultiple Airlines

Deal found 11/9£131

Sat 4/1021:10LHR - BFS

2 stops35h 00mMultiple Airlines

Deal found 11/9£132

Fri 3/1017:10LHR - BFS

1 stop5h 15mMultiple Airlines

Deal found 11/9£133

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 14/10

15:50-21:55

2 stops6h 05m

Belfast Intl

Wed 15/10

09:35-20:05

1 stop10h 30m

£213

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 14/11

08:40-13:40

1 stop5h 00m

Belfast Intl

Mon 17/11

09:55-16:05

1 stop6h 10m

£249

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 4/10

09:00-16:40

1 stop7h 40m

Belfast Intl

Tue 7/10

14:50-21:25

1 stop6h 35m

£251

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Mon 3/11

12:10-20:45

2 stops8h 35m

Belfast Intl

Mon 24/11

09:55-17:00

1 stop7h 05m

£261

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 21/11

06:30-13:40

1 stop7h 10m

Belfast Intl

Sun 23/11

14:45-19:15

1 stop4h 30m

£274

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Fri 3/10

17:10-22:25

1 stop5h 15m

Belfast Intl

Sun 5/10

13:20-20:55

1 stop7h 35m

£281

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 2/10

09:00-19:05

1 stop10h 05m

Belfast Intl

Mon 6/10

15:30-21:25

1 stop5h 55m

£283

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Sat 25/10

17:00-21:45

2 stops28h 45m

Belfast Intl

Sun 2/11

21:10-17:40

2 stops20h 30m

£286

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 8/1

08:55-14:05

1 stop5h 10m

Belfast Intl

Sun 11/1

15:45-21:25

1 stop5h 40m

£292

LondonBelfast

LHR - BFS

LHRBFS

London Heathrow

Thu 2/10

14:45-22:25

1 stop7h 40m

Belfast Intl

Sun 5/10

13:20-20:55

1 stop7h 35m

£293

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 21 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 66 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £67). Flying from London Heathrow Airport to Belfast Intl Airport in July is currently the most expensive (average of £90). 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 17% 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

1,820 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

1,820 reviews

easyJet

6.9

Okay

1,820 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

7,361 reviews

easyJet

6.9

Okay

1,820 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 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 £30. 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £67). Flying from London Heathrow Airport to Belfast Intl Airport in July is currently the most expensive (average of £90). 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

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Top 2 airlines flying from Heathrow to Belfast Intl

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£30	Average£69	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
British Airways	Cheapest£79	Average£127	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.

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Cheap flights from London Heathrow Airport to Belfast Intl Airport from £89

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 18/9. 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 66 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 12 September 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 12 September 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?

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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 12 September 2025.