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Cheap flights from London Heathrow Airport to Belfast Intl Airport from £75

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BFS
10 Sep — 17 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Belfast Intl
Explore the most affordable flight options available from Heathrow to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 August 2026.

Fri 4/915:00 -
1 stop7h 50m
Fri 18/918:35 -
1 stop19h 40m
Deal found 7/8£215
Mon 7/920:50 -
2 stops13h 00m
Mon 21/914:40 -
1 stop6h 45m
Deal found 10/8£220
Sun 8/1117:35 -
1 stop14h 35m
Sun 15/1117:10 -
1 stop14h 45m
Deal found 10/8£240
Wed 9/920:50 -
1 stop12h 55m
Thu 17/910:15 -
1 stop9h 50m
Deal found 9/8£244
Mon 7/911:30 -
1 stop6h 55m
Mon 14/909:30 -
2 stops6h 30m
Deal found 10/8£250
Sat 26/907:40 -
2 stops7h 10m
Mon 28/914:40 -
1 stop6h 45m
Deal found 7/8£252
Tue 22/908:55 -
1 stop10h 10m
Tue 29/914:45 -
1 stop6h 40m
Deal found 8/8£253
Wed 9/920:50 -
1 stop12h 55m
Mon 28/909:10 -
1 stop10h 55m
Deal found 10/8£259
Mon 21/908:40 -
1 stop5h 15m
Mon 28/910:05 -
1 stop9h 20m
Deal found 7/8£260
Thu 3/906:15 -
1 stop7h 30m
Mon 7/915:35 -
1 stop5h 50m
Deal found 7/8£261

Find flight deals from Heathrow to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Belfast Intl (BFS). 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 August 2026.

Round-trip from

£215

One-way from

£75

Popular in

June

Cheapest in

November

Average price

£153
4/9-18/9
  • 4/9-18/9
  • 2 total stops
  • 27h 30m total
  • London to Belfast
Search Deals
6/9
  • 6/9
  • 1 total stop
  • 27h 25m total
  • London to Belfast
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Belfast Intl 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 August 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Mon 7/9

11:30-18:25

1 stop6h 55m

Belfast Intl

Mon 14/9

09:30-16:00

2 stops6h 30m

£250

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Sat 26/9

07:40-14:50

2 stops7h 10m

Belfast Intl

Mon 28/9

14:40-21:25

1 stop6h 45m

£252

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Thu 3/9

06:15-13:45

1 stop7h 30m

Belfast Intl

Mon 7/9

15:35-21:25

1 stop5h 50m

£261

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Mon 21/9

08:40-13:55

1 stop5h 15m

Belfast Intl

Mon 28/9

10:05-19:25

1 stop9h 20m

£267

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Fri 25/9

15:50-21:45

2 stops5h 55m

Belfast Intl

Fri 2/10

18:40-07:40

1 stop13h 00m

£270

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Thu 3/9

11:45-22:25

1 stop10h 40m

Belfast Intl

Fri 11/9

18:40-07:40

1 stop13h 00m

£287
Fastest return journey

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Fri 18/9

17:10-22:25

1 stop5h 15m

Belfast Intl

Sun 20/9

13:25-19:30

1 stop6h 05m

£291

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Fri 18/9

17:10-22:25

1 stop5h 15m

Belfast Intl

Mon 21/9

10:05-19:25

1 stop9h 20m

£305
Cheapest one-way

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Wed 16/9

09:55-22:30

2 stops12h 35m

£98

LondonBelfast

LHR London Heathrow - BFS Belfast Intl

LHRBFS

London Heathrow

Thu 24/9

11:05-22:10

2 stops11h 05m

£104

Flights are sorted by cheapest return flights first.

Deals found on 6/8

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Heathrow to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Heathrow 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 London Heathrow Airport to Belfast Intl Airport

How far ahead should I book a flight from London Heathrow Airport to Belfast Intl Airport?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Belfast Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Belfast Intl Airport?

Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £117). Flying from London Heathrow Airport to Belfast Intl Airport in June is currently the most expensive (average of £164). 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 London Heathrow Airport to Belfast Intl Airport?

Airfare is typical for this route at the moment.

London Heathrow Airport to Belfast Intl Airport flights typically cost between £118 and £227 in September.
The cheapest return price found within the last 5 days was £215 on Multiple Airlines (4 Sept–18 Sept).

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Belfast Intl. Reviews last updated 11 August 2026.
Check out reviews from past customers who have flown with easyJet,British Airways, andRyanair from London Heathrow Airport to Belfast Intl 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
1,922 reviews
Check prices

Food

5.9

Entertainment

5.5

Boarding

6.7

Comfort

6.8

Crew

7.7

Overall

6.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France
easyJet
6.9
Okay
1,922 reviews
easyJet
6.9
Okay
1,922 reviews
Check prices

Food

5.9

Entertainment

5.5

Boarding

6.7

Comfort

6.8

Crew

7.7

Overall

6.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France
British Airways
6.7
Okay
8,156 reviews
easyJet
6.9
Okay
1,922 reviews
Check prices

Food

5.9

Entertainment

5.5

Boarding

6.7

Comfort

6.8

Crew

7.7

Overall

6.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France
Ryanair
6.4
Okay
easyJet
6.9
Okay
1,922 reviews
Check prices

Food

5.9

Entertainment

5.5

Boarding

6.7

Comfort

6.8

Crew

7.7

Overall

6.9

Reviews

1 / 20
10.0
Excellent

David J,Jul 2026

LGW - BOD

great pilot who explained tye delays due to the fires in France

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Belfast Intl. 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 London Heathrow Airport to Belfast Intl Airport round-trip?

    Cheapflights users have booked flights from London Heathrow Airport to Belfast Intl Airport round-trip from £23. Other airlines that can offer you cheap pricing are easyJet, from £34, and British Airways, from £91. These flights start at 83% lower than the current average price 3 months from now.

  • Can I find deals for flights from Heathrow to Belfast Intl that include hotel bookings?

    Yes. In addition to deals on Heathrow to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Belfast Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Belfast Intl.

  • Can I find deals for business class flights from Heathrow to Belfast Intl?

    Yes. Cheapflights offers flight deals from Heathrow to Belfast Intl 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 London Heathrow Airport to Belfast Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from London Heathrow Airport to Belfast Intl Airport (average of £117). Flying from London Heathrow Airport to Belfast Intl Airport in June is currently the most expensive (average of £164). 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 Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Heathrow to Belfast Intl

Discover the top 3 airlines that operate flights from Heathrow to Belfast Intl. 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 August 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£23Average£47FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£34Average£90FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£91Average£139FlexibilityNo 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 Heathrow to Belfast Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Belfast Intl from Heathrow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Belfast Intl?

Cheapflights helps you find that perfect flight to Belfast Intl from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Belfast Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Belfast Intl with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Belfast Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Belfast Intl from Heathrow today and book when prices fit your budget.

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