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Cheap flights from Northern Ireland to London Heathrow Airport from £54

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 21/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

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 6 November 2025.

Round-trip from

£87

One-way from

£54

Popular in

June

Cheapest in

January

Average price

£50

Good round-trip deal

£157 or less

Good one-way deal

£57 or less
British Airways
  • British Airways
  • 25/1-30/1
  • Nonstop
  • 3h 00m total
  • Northern Ireland to London
Search Deals
British Airways
  • British Airways
  • 21/12
  • Nonstop
  • 1h 35m total
  • Northern Ireland to London
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 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

Enter your travel dates to find the best prices.

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 6 November 2025.

Tue 23/1219:25BHD - LHR
Nonstop1h 20mBritish Airways
Fri 2/106:05LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 5/11£92
Sun 14/1206:30BHD - LHR
Nonstop1h 35mBritish Airways
Mon 15/1207:00LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 5/11£94
Tue 9/1215:05BHD - LHR
Nonstop1h 25mBritish Airways
Wed 10/1207:00LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 4/11£95
Wed 31/1219:25BHD - LHR
Nonstop1h 20mBritish Airways
Sat 3/109:05LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 4/11£110
Wed 10/1212:25BHD - LHR
Nonstop1h 30mBritish Airways
Thu 11/1206:50LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 4/11£113
Fri 5/1219:35BHD - LHR
Nonstop1h 20mBritish Airways
Sun 7/1207:45LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 5/11£116
Thu 20/1120:00BHD - LHR
Nonstop1h 20mBritish Airways
Sun 23/1107:45LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 5/11£117
Wed 24/1219:25BHD - LHR
Nonstop1h 20mBritish Airways
Fri 2/106:05LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 4/11£118
Sun 14/1209:05LDY - LHR
Nonstop1h 30mLoganair
Wed 31/1220:20LHR - LDY
Nonstop1h 25mLoganair
Deal found 5/11£161
Fri 19/1206:30LDY - LHR
Nonstop1h 30mLoganair
Fri 26/1220:20LHR - LDY
Nonstop1h 25mLoganair
Deal found 4/11£168
Sun 14/1216:55LDY - LHR
2 stops25h 05mMultiple Airlines
Wed 31/1220:20LHR - LDY
Nonstop1h 25mMultiple Airlines
Deal found 5/11£169
Tue 18/1118:05LDY - LHR
Nonstop1h 30mLoganair
Tue 25/1108:45LHR - LDY
Nonstop1h 30mLoganair
Deal found 3/11£172

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 6 November 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

Tue 21/4

13:40-15:00

Nonstop1h 20m

London Heathrow

Mon 4/5

07:45-09:05

Nonstop1h 20m

£91

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sun 14/12

06:30-08:05

Nonstop1h 35m

London Heathrow

Sun 28/12

06:50-08:15

Nonstop1h 25m

£92

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 25/2

17:40-19:00

Nonstop1h 20m

London Heathrow

Sat 28/2

07:00-08:25

Nonstop1h 25m

£93

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Tue 10/2

19:25-20:45

Nonstop1h 20m

London Heathrow

Sat 14/2

07:00-08:25

Nonstop1h 25m

£107

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Thu 19/2

09:05-10:35

Nonstop1h 30m

London Heathrow

Mon 23/2

18:45-20:15

Nonstop1h 30m

£111

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Tue 17/2

08:45-10:15

Nonstop1h 30m

London Heathrow

Wed 18/2

09:05-10:30

Nonstop1h 25m

£111

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Thu 8/1

20:00-21:20

Nonstop1h 20m

London Heathrow

Fri 9/1

17:20-18:50

Nonstop1h 30m

£112

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sat 25/4

19:00-20:20

Nonstop1h 20m

London Heathrow

Sun 26/4

08:50-10:10

Nonstop1h 20m

£113

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Tue 13/1

10:00-11:30

Nonstop1h 30m

London Heathrow

Fri 16/1

19:00-20:30

Nonstop1h 30m

£114

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 13/3

06:45-08:20

Nonstop1h 35m

London Heathrow

Sat 4/4

19:20-20:45

Nonstop1h 25m

£116

Flights are sorted by cheapest return flights first.

Deals found on 4/11

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 £34). Flying from Northern Ireland to London Heathrow Airport in May is currently the most expensive (average of £84). 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 6 November 2025.

It’s optimal to fly from Northern Ireland to London Heathrow Airport in the evening. By choosing this option you can save up to 66% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Northern Ireland to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from Northern Ireland to Heathrow. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Northern Ireland to London Heathrow Airport flight should consider departing on Saturday at midday when fares are most often at their lowest. Tuesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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 20m. Airlines will cover a distance of 312 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 City - London Heathrow. You may also consider Belfast Intl - 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 £34). Flying from Northern Ireland to London Heathrow Airport in May is currently the most expensive (average of £84). 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
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Northern Ireland to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Newcastle upon Tyne to Gatwick flights
Newcastle upon Tyne to Stansted flights
Newcastle upon Tyne to Luton flights
Manchester to London City flights
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Prestwick to Gatwick flights
Aberdeen to Stansted flights
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Newcastle upon Tyne to London City flights
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Leeds to Heathrow flights
Liverpool to Heathrow flights
Belfast Intl to Southend flights
Inverness to Gatwick flights
Liverpool to Stansted flights
Inverness to Luton flights
Manchester to Southend flights
Newquay to Gatwick flights
Southampton to London City 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 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£31Average£73FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£79Average£152FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£138Average£210FlexibilityNo 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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