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Cheap flights from Belfast Intl Airport to London Heathrow Airport from £68

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
24 Apr — 1 May1
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 25 March 2026.

Fri 19/608:55
BFS
-
LHR
1 stop4h 30m
Multiple Airlines
Mon 22/618:20
LHR
-
BFS
1 stop3h 30m
Multiple Airlines
Deal found 22/3£219
Thu 7/508:10
BFS
-
LHR
1 stop3h 50m
Multiple Airlines
Thu 14/508:50
LHR
-
BFS
1 stop4h 10m
Multiple Airlines
Deal found 23/3£219
Fri 4/917:05
BFS
-
LHR
1 stop4h 05m
Multiple Airlines
Fri 18/918:15
LHR
-
BFS
1 stop3h 25m
Multiple Airlines
Deal found 22/3£225
Wed 26/807:30
BFS
-
LHR
1 stop4h 35m
Multiple Airlines
Sun 30/818:00
LHR
-
BFS
1 stop3h 25m
Multiple Airlines
Deal found 23/3£239
Wed 6/510:55
BFS
-
LHR
1 stop4h 05m
Multiple Airlines
Mon 18/518:20
LHR
-
BFS
1 stop3h 30m
Multiple Airlines
Deal found 24/3£243
Wed 26/807:30
BFS
-
LHR
1 stop4h 35m
Multiple Airlines
Sat 29/816:15
LHR
-
BFS
1 stop5h 00m
Multiple Airlines
Deal found 23/3£244
Wed 20/506:05
BFS
-
LHR
2 stops7h 25m
Multiple Airlines
Thu 21/520:30
LHR
-
BFS
1 stop12h 10m
Multiple Airlines
Deal found 20/3£259
Wed 1/406:15
BFS
-
LHR
1 stop7h 30m
Multiple Airlines
Sun 26/409:55
LHR
-
BFS
1 stop22h 45m
Multiple Airlines
Deal found 20/3£267
Tue 5/514:45
BFS
-
LHR
1 stop6h 40m
Multiple Airlines
Tue 12/508:55
LHR
-
BFS
1 stop10h 10m
Multiple Airlines
Deal found 20/3£275
Wed 6/506:15
BFS
-
LHR
1 stop7h 30m
Multiple Airlines
Wed 13/515:10
LHR
-
BFS
2 stops7h 50m
Multiple Airlines
Deal found 22/3£277
Thu 23/408:10
BFS
-
LHR
1 stop3h 50m
Multiple Airlines
Thu 30/408:50
LHR
-
BFS
1 stop4h 10m
Multiple Airlines
Deal found 23/3£281

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 25 March 2026.

Round-trip from

£216

One-way from

£68

Popular in

April

Cheapest in

October

Average price

£134
9/9-18/9
  • 9/9-18/9
  • 2 total stops
  • 8h 35m total
  • Belfast to London
Search Deals
30/3
  • 30/3
  • 1 total stop
  • 23h 35m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 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
Fastest return journey

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 24/7

17:05-21:10

1 stop4h 05m

London Heathrow

Mon 27/7

18:20-21:50

1 stop3h 30m

£219

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 7/5

08:10-12:00

1 stop3h 50m

London Heathrow

Thu 14/5

08:50-13:00

1 stop4h 10m

£219

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 26/8

07:30-12:05

1 stop4h 35m

London Heathrow

Sun 30/8

18:00-21:25

1 stop3h 25m

£239

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 6/5

06:15-13:45

1 stop7h 30m

London Heathrow

Wed 13/5

15:10-23:00

2 stops7h 50m

£277

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 9/4

10:15-20:05

1 stop9h 50m

London Heathrow

Sun 12/4

20:50-08:40

1 stop11h 50m

£291

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 23/6

13:15-07:40

2 stops18h 25m

London Heathrow

Tue 30/6

14:45-11:05

2 stops20h 20m

£315

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Fri 8/5

12:20-20:20

2 stops8h 00m

London Heathrow

Fri 15/5

14:45-22:25

1 stop7h 40m

£316

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 6/5

13:55-20:20

2 stops6h 25m

London Heathrow

Mon 18/5

10:50-00:15

1 stop13h 25m

£346

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 20/4

15:35-21:25

1 stop5h 50m

London Heathrow

Mon 27/4

08:55-15:00

1 stop6h 05m

£348

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 2/5

10:10-16:35

1 stop6h 25m

London Heathrow

Thu 7/5

11:30-19:35

1 stop8h 05m

£366

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 21 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?

Use this chart to determine the optimal time to book a return flight from Belfast Intl to Heathrow. Price data was last updated on 13 March 2026.

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 77 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, November is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £76). Flying from Belfast Intl Airport to London Heathrow Airport in February is currently the most expensive (average of £92). 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.

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 25 March 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
1,887 reviews
Check prices

Boarding

6.7

Crew

7.6

Food

5.9

Comfort

6.7

Entertainment

5.5

Overall

6.9

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
1,887 reviews
easyJet
6.9
Okay
1,887 reviews
Check prices

Boarding

6.7

Crew

7.6

Food

5.9

Comfort

6.7

Entertainment

5.5

Overall

6.9

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
7,815 reviews
easyJet
6.9
Okay
1,887 reviews
Check prices

Boarding

6.7

Crew

7.6

Food

5.9

Comfort

6.7

Entertainment

5.5

Overall

6.9

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, November is the cheapest month in which you can book a flight from Belfast Intl Airport to London Heathrow Airport (average of £76). Flying from Belfast Intl Airport to London Heathrow Airport in February is currently the most expensive (average of £92). 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
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Eastbourne
Guildford
Watford
Kingston upon Thames
Romford
Ipswich
Swindon
Bedford

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.

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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£67FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£86Average£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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