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Cheap flights from Belfast Intl Airport to London Heathrow Airport from £69

BFS — LHR
8 Oct — 15 Oct1
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

Wed 4/1107:40 -
2 stops13h 10m
Wed 11/1111:45 -
2 stops9h 10m
Deal found 5/9£218
Fri 23/1022:15 -
1 stop9h 20m
Sun 25/1008:35 -
1 stop7h 15m
Deal found 3/9£219
Tue 8/1207:05 -
1 stop7h 20m
Fri 11/1215:15 -
1 stop6h 40m
Deal found 4/9£235
Mon 21/914:40 -
1 stop6h 45m
Sun 27/911:05 -
2 stops12h 20m
Deal found 3/9£242
Tue 10/1107:05 -
1 stop14h 20m
Wed 18/1119:25 -
1 stop12h 40m
Deal found 6/9£247
Tue 6/1014:45 -
1 stop6h 40m
Tue 13/1015:50 -
2 stops6h 35m
Deal found 6/9£263
Sun 29/1107:55 -
2 stops12h 10m
Tue 1/1220:50 -
2 stops20h 45m
Deal found 4/9£271
Tue 20/1014:45 -
1 stop6h 40m
Mon 2/1106:20 -
1 stop13h 50m
Deal found 6/9£272
Mon 5/1015:35 -
1 stop5h 50m
Mon 12/1015:10 -
2 stops5h 45m
Deal found 7/9£275
Sat 3/1006:30 -
2 stops8h 00m
Thu 22/1020:30 -
1 stop12h 10m
Deal found 4/9£277
Fri 25/911:25 -
1 stop7h 10m
Mon 28/916:50 -
2 stops6h 45m
Deal found 7/9£278

Find flight deals from Belfast Intl to Heathrow

Round-trip from

£218

One-way from

£69

Popular in

March

Cheapest in

December

Average price

£132
4/11-11/11
  • 4/11-11/11
  • 4 total stops
  • 22h 20m total
  • Belfast to London
Search Deals
21/9-31/12
  • 21/9-31/12
  • 1 total stop
  • 23h 35m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£6 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 2026
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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

Cheapest return flight

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Fri 18/9

11:25-14:15

1 stop26h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£78

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Fri 9/10

06:40-14:30

2 stops7h 50m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£80

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Tue 20/10

07:35-18:20

2 stops10h 45m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£87

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Sat 3/10

06:30-14:30

2 stops8h 00m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£89
Fastest return journey

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Sat 10/10

13:55-20:20

2 stops6h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£93

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 29/10

09:25-19:50

2 stops10h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£94

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Tue 22/9

17:10-09:10

2 stops16h 00m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Tue 1/12

10:40-20:05

2 stops9h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£95

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 19/11

09:25-19:50

2 stops10h 25m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£96

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 3/12

09:25-20:05

2 stops10h 40m

London Heathrow

Wed 31/12

00:00-00:00

Nonstop0h 00m

£103

Flights are sorted by cheapest return flights first.

Deals found on 5/9

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

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 54 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 £120). Flying from Belfast Intl Airport to London Heathrow Airport in March is currently the most expensive (average of £171). 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?

Airfare is above average for this route at the moment.

Belfast Intl Airport to London Heathrow Airport flights typically cost between £106 and £172 in November.
The cheapest return price found within the last 5 days was £218 on Multiple Airlines (4 Nov–11 Nov).

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
1,924 reviews
Check prices

Boarding

6.7

Crew

7.7

Entertainment

5.5

Overall

6.9

Food

5.9

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
1,924 reviews
easyJet
6.9
Okay
1,924 reviews
Check prices

Boarding

6.7

Crew

7.7

Entertainment

5.5

Overall

6.9

Food

5.9

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
8,211 reviews
easyJet
6.9
Okay
1,924 reviews
Check prices

Boarding

6.7

Crew

7.7

Entertainment

5.5

Overall

6.9

Food

5.9

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

  • 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 75% 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 £120). Flying from Belfast Intl Airport to London Heathrow Airport in March is currently the most expensive (average of £171). 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
Gatwick
Wembley
Slough
Ilford
Hayes
Northampton
Croydon
Colchester
Eastbourne
Brentford
Enfield
Southend-on-Sea
Barnet
Salisbury
Watford
Southall
Swindon

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Belfast Intl to Heathrow

AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£109FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£88Average£137FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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