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Cheap flights from Belfast Intl Airport to London Heathrow Airport from £81

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 17/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
11 Jul — 18 Jul1
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 11 June 2026.

Sun 19/722:05
BFS
-
LHR
1 stop9h 50m
Multiple Airlines
Wed 22/706:45
LHR
-
BFS
1 stop11h 05m
Multiple Airlines
Deal found 9/6£203
Thu 11/606:05
BFS
-
LHR
1 stop13h 25m
Multiple Airlines
Thu 18/620:30
LHR
-
BFS
1 stop12h 10m
Multiple Airlines
Deal found 10/6£255
Fri 17/718:35
BFS
-
LHR
1 stop13h 20m
Multiple Airlines
Fri 31/717:35
LHR
-
BFS
1 stop5h 15m
Multiple Airlines
Deal found 7/6£279
Thu 9/707:30
BFS
-
LHR
1 stop11h 05m
Multiple Airlines
Mon 27/719:45
LHR
-
BFS
1 stop15h 05m
Multiple Airlines
Deal found 7/6£296
Thu 23/716:40
BFS
-
LHR
1 stop4h 15m
Multiple Airlines
Mon 27/716:50
LHR
-
BFS
2 stops6h 00m
Multiple Airlines
Deal found 10/6£314
Tue 16/614:45
BFS
-
LHR
1 stop6h 40m
Multiple Airlines
Tue 23/608:55
LHR
-
BFS
1 stop8h 55m
Multiple Airlines
Deal found 9/6£315
Thu 16/707:00
BFS
-
LHR
1 stop11h 55m
Multiple Airlines
Mon 20/709:55
LHR
-
BFS
3 stops21h 30m
Multiple Airlines
Deal found 7/6£318
Thu 23/707:30
BFS
-
LHR
1 stop6h 15m
Multiple Airlines
Thu 30/715:50
LHR
-
BFS
2 stops7h 25m
Multiple Airlines
Deal found 8/6£328
Tue 14/706:15
BFS
-
LHR
1 stop15h 10m
Multiple Airlines
Fri 31/717:35
LHR
-
BFS
1 stop5h 15m
Multiple Airlines
Deal found 10/6£335

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 11 June 2026.

Round-trip from

£203

One-way from

£81

Popular in

July

Cheapest in

December

Average price

£137
19/7-22/7
  • 19/7-22/7
  • 2 total stops
  • 20h 55m total
  • Belfast to London
Search Deals
17/7
  • 17/7
  • 1 total stop
  • 26h 50m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£7 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 June 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 11 June 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

Fri 17/7

18:35-07:55

1 stop13h 20m

London Heathrow

Fri 31/7

17:35-22:50

1 stop5h 15m

£279

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 23/7

07:30-13:45

1 stop6h 15m

London Heathrow

Thu 30/7

06:15-11:45

1 stop5h 30m

£342

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sun 26/7

13:25-20:55

1 stop7h 30m

London Heathrow

Sun 2/8

15:50-21:30

2 stops5h 40m

£348

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 1/7

06:15-12:40

2 stops6h 25m

London Heathrow

Thu 2/7

20:30-08:40

1 stop12h 10m

£354

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 24/6

17:45-09:10

1 stop15h 25m

London Heathrow

Sat 27/6

20:50-12:25

1 stop15h 35m

£369

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 9/7

10:25-17:20

2 stops6h 55m

London Heathrow

Thu 16/7

14:45-20:35

1 stop5h 50m

£381

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 14/7

06:15-16:35

1 stop10h 20m

London Heathrow

Thu 30/7

06:15-11:45

1 stop5h 30m

£381

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 14/7

08:00-16:00

2 stops8h 00m

London Heathrow

Fri 31/7

17:10-22:25

1 stop5h 15m

£382

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 25/7

07:40-13:45

1 stop6h 05m

London Heathrow

Sat 1/8

06:15-14:25

1 stop8h 10m

£400
Fastest return journey

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 23/7

16:40-20:55

1 stop4h 15m

London Heathrow

Mon 27/7

08:40-13:50

1 stop5h 10m

£402

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 76 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 £154). 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 11 June 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
1,906 reviews
Check prices

Crew

7.7

Food

5.9

Boarding

6.7

Overall

6.9

Comfort

6.8

Entertainment

5.5

Reviews

1 / 20
10.0
Excellent

Kevin,Jun 2026

MRS - BRS

On time departure. Clean comfortable aircraft and fantastic friendly crew.
easyJet
6.9
Okay
1,906 reviews
easyJet
6.9
Okay
1,906 reviews
Check prices

Crew

7.7

Food

5.9

Boarding

6.7

Overall

6.9

Comfort

6.8

Entertainment

5.5

Reviews

1 / 20
10.0
Excellent

Kevin,Jun 2026

MRS - BRS

On time departure. Clean comfortable aircraft and fantastic friendly crew.
British Airways
6.7
Okay
8,044 reviews
easyJet
6.9
Okay
1,906 reviews
Check prices

Crew

7.7

Food

5.9

Boarding

6.7

Overall

6.9

Comfort

6.8

Entertainment

5.5

Reviews

1 / 20
10.0
Excellent

Kevin,Jun 2026

MRS - BRS

On time departure. Clean comfortable aircraft and fantastic friendly crew.

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 £35, 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 £154). 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
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Kingston upon Thames
Eastbourne
Watford
Swindon
Ipswich
Poole
Guildford
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 11 June 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£35Average£67FlexibilityNo 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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