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

BFS — LHR
30 Sep — 7 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

Sat 10/1021:40 -
1 stop23h 20m
Sat 17/1020:10 -
1 stop13h 25m
Deal found 26/8£177
Sat 21/1112:30 -
2 stops20h 40m
Sat 28/1120:50 -
2 stops22h 45m
Deal found 28/8£192
Sat 10/1021:30 -
1 stop10h 45m
Sun 11/1021:00 -
1 stop10h 30m
Deal found 26/8£199
Sun 11/1013:25 -
1 stop4h 25m
Sun 18/1020:50 -
1 stop11h 50m
Deal found 27/8£230
Wed 25/1108:00 -
2 stops25h 10m
Sun 29/1109:55 -
2 stops13h 20m
Deal found 28/8£246
Fri 25/918:35 -
1 stop13h 20m
Thu 1/1006:15 -
1 stop7h 30m
Deal found 30/8£256
Thu 1/1017:30 -
2 stops15h 40m
Sat 10/1009:55 -
2 stops22h 05m
Deal found 28/8£262
Mon 12/1015:35 -
1 stop5h 50m
Mon 19/1015:10 -
2 stops5h 45m
Deal found 28/8£263
Thu 24/908:10 -
2 stops8h 05m
Sat 26/908:40 -
2 stops12h 35m
Deal found 29/8£274
Tue 13/1014:45 -
1 stop6h 40m
Tue 20/1011:30 -
1 stop7h 35m
Deal found 28/8£278

Find flight deals from Belfast Intl to Heathrow

Round-trip from

£177

One-way from

£68

Popular in

March

Cheapest in

December

Average price

£148
10/10-17/10
  • 10/10-17/10
  • 2 total stops
  • 36h 45m total
  • Belfast to London
Search Deals
14/9
  • 14/9
  • 1 total stop
  • 23h 35m total
  • Belfast to London
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£5 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 August 2026
Search Deals

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

Sat 10/10

21:30-08:15

1 stop10h 45m

London Heathrow

Sun 11/10

21:00-07:30

1 stop10h 30m

£199

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Sun 11/10

13:25-17:50

1 stop4h 25m

London Heathrow

Sun 18/10

20:50-08:40

1 stop11h 50m

£230

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Fri 25/9

18:35-07:55

1 stop13h 20m

London Heathrow

Thu 1/10

06:15-13:45

1 stop7h 30m

£256

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Tue 13/10

14:45-21:25

1 stop6h 40m

London Heathrow

Tue 20/10

11:30-19:05

1 stop7h 35m

£280
Fastest return journey

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Mon 12/10

15:35-21:25

1 stop5h 50m

London Heathrow

Mon 19/10

06:30-13:55

1 stop7h 25m

£281

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Fri 2/10

11:25-18:35

1 stop7h 10m

London Heathrow

Sun 4/10

15:50-23:25

2 stops7h 35m

£288

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 24/9

14:25-21:25

1 stop7h 00m

London Heathrow

Mon 28/9

06:15-15:00

1 stop8h 45m

£318

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 1/10

14:25-21:25

1 stop7h 00m

London Heathrow

Sun 4/10

14:35-23:25

2 stops8h 50m

£324

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Thu 1/10

14:25-21:25

1 stop7h 00m

London Heathrow

Sat 10/10

07:40-14:50

2 stops7h 10m

£335
Cheapest one-way

BelfastLondon

BFS Belfast Intl - LHR London Heathrow

BFSLHR

Belfast Intl

Wed 23/9

06:15-14:15

1 stop8h 00m

£83

Flights are sorted by cheapest return flights first.

Deals found on 27/8

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

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 £118). Flying from Belfast Intl Airport to London Heathrow Airport in March is currently the most expensive (average of £165). 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 £185 in November.
The cheapest return price found within the last 5 days was £192 on Multiple Airlines (21 Nov–28 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
1,926 reviews
Check prices

Comfort

6.8

Boarding

6.7

Overall

6.9

Entertainment

5.5

Crew

7.7

Food

5.9

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
1,926 reviews
easyJet
6.9
Okay
1,926 reviews
Check prices

Comfort

6.8

Boarding

6.7

Overall

6.9

Entertainment

5.5

Crew

7.7

Food

5.9

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
8,198 reviews
easyJet
6.9
Okay
1,926 reviews
Check prices

Comfort

6.8

Boarding

6.7

Overall

6.9

Entertainment

5.5

Crew

7.7

Food

5.9

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

  • 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 £118). Flying from Belfast Intl Airport to London Heathrow Airport in March is currently the most expensive (average of £165). 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
Croydon
Northampton
Colchester
Eastbourne
Brentford
Barnet
Salisbury
Southall
Southend-on-Sea
Enfield
Kingston upon Thames
Watford

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Belfast Intl to Heathrow

AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£95FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£87Average£136FlexibilityNo 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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