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Cheap flights from Northern Ireland to London Heathrow Airport from £51

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
3 Sep — 10 Sep1
1 adult

Cheap flight deals from Northern Ireland to Heathrow

Keep the following information in mind while searching for Northern Ireland to Heathrow flight deals. Data was last updated 29 August 2025.

Round-trip from

£87

One-way from

£51

Popular in

August

Cheapest in

January

Average price

£99

Good round-trip deal

£171 or less

Good one-way deal

£96 or less
British Airways
  • British Airways
  • 5/11-20/11
  • Nonstop
  • 3h 00m total
  • Northern Ireland to London
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British Airways
  • British Airways
  • 1/12
  • Nonstop
  • 1h 20m total
  • Northern Ireland to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£12 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Northern Ireland to London Heathrow.
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Price to beat on a one-way flight from Northern Ireland to London Heathrow.
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Find flight deals from Northern Ireland to Heathrow

Cheapest flights from Northern Ireland to Heathrow
Explore the most affordable flight options available from Northern Ireland to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Wed 5/1106:35BHD - LHR
Nonstop1h 35mBritish Airways
Thu 20/1106:50LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 28/8£87
Fri 14/1106:45BHD - LHR
Nonstop1h 35mBritish Airways
Fri 14/1116:30LHR - BHD
Nonstop1h 30mBritish Airways
Deal found 27/8£87
Fri 5/1219:35BHD - LHR
Nonstop1h 20mBritish Airways
Sun 7/1206:50LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 27/8£89
Fri 21/1106:45BHD - LHR
Nonstop1h 35mBritish Airways
Sun 23/1106:50LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 27/8£90
Fri 14/1119:35BHD - LHR
Nonstop1h 20mBritish Airways
Mon 24/1107:00LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 27/8£90
Mon 27/1017:45BHD - LHR
Nonstop1h 20mBritish Airways
Wed 29/1007:00LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 28/8£92
Fri 17/1020:05BHD - LHR
Nonstop1h 20mBritish Airways
Sun 19/1010:55LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 28/8£93
Wed 8/1018:15BHD - LHR
Nonstop1h 20mBritish Airways
Thu 9/1006:15LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 28/8£93
Fri 3/1006:35BHD - LHR
Nonstop1h 25mBritish Airways
Sun 5/1010:55LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 28/8£95
Sat 4/1019:00BHD - LHR
Nonstop1h 20mBritish Airways
Sun 5/1010:55LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 27/8£95
Thu 2/1006:35BHD - LHR
Nonstop1h 25mBritish Airways
Thu 9/1006:15LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 27/8£99
Sat 25/1014:00LDY - LHR
Nonstop1h 30mLoganair
Sat 8/1108:45LHR - LDY
Nonstop1h 30mLoganair
Deal found 28/8£138

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland 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 29 August 2025.
Use the filters below to find and compare flights from Northern Ireland to London Heathrow Airport that are best for you.

Fly from

Northern Ireland

Fly to

Heathrow

Route

Depart

Return

Price

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 5/11

06:35-08:10

Nonstop1h 35m

London Heathrow

Thu 20/11

06:50-08:15

Nonstop1h 25m

£87

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 14/11

06:45-08:20

Nonstop1h 35m

London Heathrow

Fri 14/11

16:30-18:00

Nonstop1h 30m

£87

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 5/12

19:35-20:55

Nonstop1h 20m

London Heathrow

Sun 7/12

06:50-08:15

Nonstop1h 25m

£89

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Tue 10/2

17:15-18:35

Nonstop1h 20m

London Heathrow

Tue 17/2

06:15-07:40

Nonstop1h 25m

£89

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 19/11

17:40-19:00

Nonstop1h 20m

London Heathrow

Wed 26/11

07:00-08:25

Nonstop1h 25m

£89

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sat 14/2

06:35-08:10

Nonstop1h 35m

London Heathrow

Mon 2/3

07:00-08:25

Nonstop1h 25m

£89

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 21/11

06:45-08:20

Nonstop1h 35m

London Heathrow

Sun 23/11

06:50-08:15

Nonstop1h 25m

£90

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 5/12

06:45-08:20

Nonstop1h 35m

London Heathrow

Mon 8/12

07:00-08:25

Nonstop1h 25m

£90

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sat 25/10

14:00-15:30

Nonstop1h 30m

London Heathrow

Sat 8/11

08:45-10:15

Nonstop1h 30m

£138

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Mon 22/12

18:05-19:35

Nonstop1h 30m

London Heathrow

Mon 29/12

20:15-21:40

Nonstop1h 25m

£139

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 52 results
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Best time to book a flight from Northern Ireland to Heathrow

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

What is the cheapest month to book a flight from Northern Ireland to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from Northern Ireland to London Heathrow Airport (average of £112). Flying from Northern Ireland to London Heathrow Airport in August 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.

What is the cheapest time of day to fly from NIR to LHR?

Find hourly flight availability from Northern Ireland to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to London Heathrow Airport as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Northern Ireland to London Heathrow Airport?

    Departing from Northern Ireland to London Heathrow Airport will take you 1h 30m. Airlines will cover a distance of 370 mi. All flights are typically direct.

  • What are the most popular routes from Northern Ireland to London Heathrow Airport?

    The most popular route from Northern Ireland to London Heathrow Airport is Belfast Intl - London Heathrow. You may also consider Belfast City - London Heathrow or Londonderry Eglinton - London Heathrow.

  • Can I find deals for flights from Northern Ireland to Heathrow that include hotel bookings?

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

  • How can I find direct flights from Northern Ireland to Heathrow?

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

  • Can I find deals for business class flights from Northern Ireland to Heathrow?

    Yes. Cheapflights offers flight deals from Northern Ireland 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 Northern Ireland to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to London Heathrow Airport (average of £112). Flying from Northern Ireland to London Heathrow Airport in August 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Northampton
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Swindon
Dartford

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.

Alternative routes for Northern Ireland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
Edinburgh to Stansted flights
Edinburgh to Gatwick flights
Edinburgh to Heathrow flights
Belfast Intl to Gatwick flights
Edinburgh to Luton flights
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Belfast Intl to London City flights
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Inverness to Heathrow flights
Newcastle upon Tyne to Heathrow flights
Inverness to Gatwick flights
Inverness to Luton flights
Aberdeen to Luton flights
Belfast City to Stansted flights
Belfast City to Luton flights
Heathrow to Gatwick flights
Aberdeen to London City flights
Aberdeen to Stansted flights
Inverness to London City flights
Newcastle upon Tyne to London City flights
Newquay to Heathrow flights
Newcastle upon Tyne to Gatwick flights
Newcastle upon Tyne to Luton flights
Newcastle upon Tyne to Stansted flights
Prestwick to Gatwick flights
Gatwick to Heathrow flights
Inverness to Stansted flights
Newquay to London City flights
Birmingham to Gatwick flights
Edinburgh to Southend flights
Manchester to Southend flights
Bristol to Gatwick flights

Top 3 airlines flying from Northern Ireland to Heathrow

Discover the top 3 airlines that operate flights from Northern Ireland 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 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£29Average£65FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£74Average£143FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£130Average£218FlexibilityNo cancel feeOn-time79%
Search Loganair 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 Northern Ireland to Heathrow?

Cheapflights helps you search for flights from Northern Ireland to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Northern Ireland.

Can Cheapflights find flights from Northern Ireland to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Northern Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Northern Ireland to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Northern Ireland 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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