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Cheap flights from Belfast Intl Airport to London Heathrow Airport from £78

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.
BFS — LHR
11 Aug — 18 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast Intl to Heathrow

Enter your travel dates to find the best prices.

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 12 July 2026.

Wed 26/805:55
BFS
-
LHR
1 stop15h 45m
Multiple Airlines
Thu 27/806:55
LHR
-
BFS
1 stop15h 25m
Multiple Airlines
Deal found 11/7£172
Sat 22/806:55
BFS
-
LHR
1 stop12h 55m
Multiple Airlines
Sat 29/821:45
LHR
-
BFS
1 stop11h 50m
Multiple Airlines
Deal found 8/7£175
Mon 24/806:30
BFS
-
LHR
1 stop24h 55m
Multiple Airlines
Mon 31/820:35
LHR
-
BFS
1 stop13h 25m
Multiple Airlines
Deal found 10/7£178
Wed 5/821:10
BFS
-
LHR
1 stop25h 20m
Multiple Airlines
Tue 11/818:15
LHR
-
BFS
1 stop12h 50m
Multiple Airlines
Deal found 8/7£184
Thu 3/921:10
BFS
-
LHR
1 stop10h 10m
Multiple Airlines
Sun 6/920:50
LHR
-
BFS
1 stop11h 50m
Multiple Airlines
Deal found 9/7£222
Mon 14/909:10
BFS
-
LHR
1 stop10h 55m
Multiple Airlines
Tue 29/920:50
LHR
-
BFS
1 stop19h 05m
Multiple Airlines
Deal found 12/7£245
Wed 22/717:45
BFS
-
LHR
1 stop15h 25m
Multiple Airlines
Sun 30/820:50
LHR
-
BFS
1 stop11h 50m
Multiple Airlines
Deal found 11/7£248
Thu 20/810:25
BFS
-
LHR
2 stops6h 55m
Multiple Airlines
Wed 26/809:55
LHR
-
BFS
1 stop14h 10m
Multiple Airlines
Deal found 8/7£251
Sun 6/913:25
BFS
-
LHR
1 stop7h 30m
Multiple Airlines
Sun 13/906:30
LHR
-
BFS
1 stop10h 40m
Multiple Airlines
Deal found 8/7£252
Thu 27/816:40
BFS
-
LHR
1 stop4h 15m
Multiple Airlines
Sun 30/820:50
LHR
-
BFS
1 stop11h 50m
Multiple Airlines
Deal found 9/7£260

Find flight deals from Belfast Intl to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Belfast Intl (BFS) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 July 2026.

Round-trip from

£172

One-way from

£78

Popular in

July

Cheapest in

December

Average price

£153
26/8-27/8
  • 26/8-27/8
  • 2 total stops
  • 31h 10m total
  • Belfast to London
Search Deals
22/10
  • 22/10
  • 1 total stop
  • 9h 50m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£8 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 July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 12 July 2026.
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

Cheapest return flight

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 14/9

09:10-20:05

1 stop10h 55m

London Heathrow

Tue 29/9

20:50-15:55

1 stop19h 05m

£245

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 6/9

13:25-20:55

1 stop7h 30m

London Heathrow

Sun 13/9

06:30-17:10

1 stop10h 40m

£252

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 3/9

16:40-14:45

3 stops22h 05m

London Heathrow

Sun 6/9

07:50-13:30

1 stop5h 40m

£269

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 24/8

09:40-20:05

1 stop10h 25m

London Heathrow

Mon 31/8

14:20-20:55

2 stops6h 35m

£272

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 6/11

07:45-21:25

1 stop13h 40m

London Heathrow

Tue 10/11

06:20-11:30

1 stop5h 10m

£280

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 26/8

05:55-13:30

2 stops7h 35m

London Heathrow

Thu 27/8

20:30-08:40

1 stop12h 10m

£289

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 15/9

14:45-21:25

1 stop6h 40m

London Heathrow

Sun 27/9

20:50-08:40

1 stop11h 50m

£289

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 25/8

10:30-17:20

2 stops6h 50m

London Heathrow

Thu 27/8

06:15-11:45

1 stop5h 30m

£292

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 22/7

17:45-09:10

1 stop15h 25m

London Heathrow

Sat 25/7

20:50-12:25

1 stop15h 35m

£300

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 15/9

14:45-21:25

1 stop6h 40m

London Heathrow

Mon 28/9

08:40-13:55

1 stop5h 15m

£309

Flights are sorted by cheapest return flights first.

Deals found on 11/7

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 69 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, December is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £116). Flying from Belfast Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £153). 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.

How much does it cost for a return flight from Belfast Intl Airport to London Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 12 July 2026.
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
1,915 reviews
Check prices

Boarding

6.7

Food

5.9

Overall

6.9

Crew

7.7

Entertainment

5.5

Comfort

6.8

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
1,915 reviews
easyJet
6.9
Okay
1,915 reviews
Check prices

Boarding

6.7

Food

5.9

Overall

6.9

Crew

7.7

Entertainment

5.5

Comfort

6.8

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
8,102 reviews
easyJet
6.9
Okay
1,915 reviews
Check prices

Boarding

6.7

Food

5.9

Overall

6.9

Crew

7.7

Entertainment

5.5

Comfort

6.8

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

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?

    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 74% 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, December is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £116). Flying from Belfast Intl Airport to London Heathrow Airport in July is currently the most expensive (average of £153). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Slough
Croydon
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Eastbourne
Swindon
Poole
Southall
Aylesbury
Romford

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Belfast Intl to Heathrow

Discover the top 2 airlines that operate flights from Belfast Intl to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 12 July 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£70FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£87Average£136FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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?

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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