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Cheap flights from Northern Ireland to London Heathrow Airport from £56

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 15/9. 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
1 adult, Economy, 0 bags

Cheap 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 4 August 2026.

Fri 18/1206:45
BHD
-
LHR
Nonstop1h 35m
British Airways
Sun 20/1218:10
LHR
-
BHD
Nonstop1h 30m
British Airways
Deal found 1/8£91
Thu 17/920:35
BHD
-
LHR
Nonstop1h 15m
British Airways
Thu 24/917:20
LHR
-
BHD
Nonstop1h 25m
British Airways
Deal found 3/8£104
Tue 8/916:25
BHD
-
LHR
Nonstop1h 20m
British Airways
Wed 9/918:20
LHR
-
BHD
Nonstop1h 20m
British Airways
Deal found 1/8£107
Wed 30/916:05
BHD
-
LHR
Nonstop1h 20m
British Airways
Wed 7/1019:20
LHR
-
BHD
Nonstop1h 15m
British Airways
Deal found 1/8£108
Tue 1/920:25
BHD
-
LHR
Nonstop1h 15m
British Airways
Tue 8/918:05
LHR
-
BHD
Nonstop1h 20m
British Airways
Deal found 1/8£109
Fri 28/820:10
BHD
-
LHR
Nonstop1h 15m
British Airways
Sun 30/819:15
LHR
-
BHD
Nonstop1h 15m
British Airways
Deal found 30/7£109
Sat 5/919:05
BHD
-
LHR
Nonstop1h 15m
British Airways
Mon 7/916:15
LHR
-
BHD
Nonstop1h 25m
British Airways
Deal found 31/7£110
Fri 6/1114:55
BHD
-
LHR
Nonstop1h 20m
British Airways
Mon 9/1107:10
LHR
-
BHD
Nonstop1h 25m
British Airways
Deal found 2/8£111
Thu 3/906:30
BHD
-
LHR
Nonstop1h 25m
British Airways
Sun 6/911:00
LHR
-
BHD
Nonstop1h 25m
British Airways
Deal found 3/8£112
Fri 28/820:10
BHD
-
LHR
Nonstop1h 15m
British Airways
Mon 31/807:20
LHR
-
BHD
Nonstop1h 20m
British Airways
Deal found 30/7£114
Tue 15/914:00
LDY
-
LHR
Nonstop1h 30m
Loganair
Wed 23/920:20
LHR
-
LDY
Nonstop1h 25m
Loganair
Deal found 3/8£162
Tue 15/916:15
BFS
-
LHR
1 stop26h 05m
Multiple Airlines
Tue 22/918:15
LHR
-
BFS
1 stop12h 50m
Multiple Airlines
Deal found 1/8£164

Find 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 4 August 2026.

Round-trip from

£91

One-way from

£56

Popular in

July

Cheapest in

November

Average price

£103

Good round-trip deal

£198 or less

Good one-way deal

£115 or less
British Airways
  • British Airways
  • 18/12-20/12
  • Nonstop
  • 3h 05m total
  • Northern Ireland to London
Search Deals
British Airways
  • British Airways
  • 15/9
  • Nonstop
  • 1h 15m total
  • Northern Ireland to London
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (£23 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 2026
Search Deals
Price to beat on a round-trip flight from Northern Ireland to London Heathrow.
Search Deals
Price to beat on a one-way flight from Northern Ireland to London Heathrow.
Search Deals

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 4 August 2026.
Use the filters below to find and compare flights from Northern Ireland to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sat 26/9

19:05-20:20

Nonstop1h 15m

London Heathrow

Sun 11/10

16:50-18:15

Nonstop1h 25m

£110

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 4/11

11:25-12:55

Nonstop1h 30m

London Heathrow

Wed 4/11

17:15-18:40

Nonstop1h 25m

£112

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 11/9

06:30-07:55

Nonstop1h 25m

London Heathrow

Mon 14/9

07:20-08:40

Nonstop1h 20m

£112

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sat 5/9

19:05-20:20

Nonstop1h 15m

London Heathrow

Mon 7/9

16:15-17:40

Nonstop1h 25m

£112

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 16/9

19:40-20:55

Nonstop1h 15m

London Heathrow

Wed 23/9

07:40-09:00

Nonstop1h 20m

£112

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Thu 17/9

20:35-21:50

Nonstop1h 15m

London Heathrow

Thu 24/9

10:40-12:00

Nonstop1h 20m

£113

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 28/8

20:10-21:25

Nonstop1h 15m

London Heathrow

Mon 31/8

07:20-08:40

Nonstop1h 20m

£114

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Thu 1/10

06:30-07:55

Nonstop1h 25m

London Heathrow

Mon 5/10

16:15-17:40

Nonstop1h 25m

£123

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Thu 8/10

19:30-20:45

Nonstop1h 15m

London Heathrow

Mon 12/10

07:20-08:40

Nonstop1h 20m

£123

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Mon 5/10

09:40-11:05

Nonstop1h 25m

London Heathrow

Wed 7/10

07:40-09:00

Nonstop1h 20m

£123

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Northern Ireland to London Heathrow Airport (average of £120). Flying from Northern Ireland to London Heathrow Airport in July 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 4 August 2026.

It’s optimal to fly from Northern Ireland to London Heathrow Airport at midday. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the afternoon.

How much does it cost for a return flight from Northern Ireland to London Heathrow Airport?

Airfare is typical for this route at the moment.
Northern Ireland to London Heathrow Airport flights typically cost between £126 and £190 in September.
The cheapest return price found within the last 5 days was £164 on Multiple Airlines (15 Sept–22 Sept).

How far ahead should I book a flight from Northern Ireland to London Heathrow Airport?

To ensure you get the cheapest price possible for a flight from Northern Ireland to London Heathrow Airport, you should look to book at least 59 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 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 1 August 2026.

Travellers seeking maximum savings on their Northern Ireland to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday afternoons 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 15m. 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, October is the cheapest month in which you can book a flight from Northern Ireland to London Heathrow Airport (average of £120). Flying from Northern Ireland to London Heathrow Airport in July 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
Hounslow
Milton Keynes
Gatwick
Luton
Wembley
Slough
Ilford
Hayes
Croydon
Colchester
Eastbourne
Brentford
Northampton
Watford
Swindon
Southend-on-Sea
Enfield
Kingston upon Thames
Southall
Poole

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.
Belfast Intl to Luton flights
Belfast Intl to Gatwick flights
Edinburgh to Luton flights
Edinburgh to Stansted flights
Edinburgh to Gatwick flights
Belfast Intl to Stansted flights
Glasgow Intl to Stansted flights
Glasgow Intl to Gatwick flights
Glasgow Intl to Luton flights
Edinburgh to Heathrow flights
Glasgow Intl to Heathrow flights
Edinburgh to London City flights
Manchester to London City flights
Manchester to Gatwick flights
Manchester to Heathrow flights
Glasgow Intl to London City flights
Manchester to Luton flights
Manchester to Stansted flights
Belfast City to Gatwick flights
Belfast Intl to Heathrow flights
Belfast City to Heathrow flights
Belfast City to Luton flights
Belfast City to Stansted flights
Belfast Intl to London City flights
Aberdeen to Heathrow flights
Belfast City to London City flights
Aberdeen to Gatwick flights
Aberdeen to London City flights
Aberdeen to Luton flights
Aberdeen to Stansted flights
Newcastle upon Tyne to Heathrow flights
Edinburgh to Southend flights
Newcastle upon Tyne to London City flights
Prestwick to Gatwick flights
Newcastle upon Tyne to Gatwick flights
Heathrow to Gatwick flights
Newcastle upon Tyne to Luton flights
Newcastle upon Tyne to Stansted flights
Inverness to Gatwick flights
Inverness to Heathrow flights
Birmingham to Gatwick flights
Newquay to Heathrow flights
Inverness to Luton flights
Manchester to Southend flights
Birmingham to London City flights
Bristol to Gatwick flights
Birmingham to Heathrow flights
Birmingham to Luton flights
Newquay to Stansted flights
Newquay 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 4 August 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£81FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£87Average£158FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£140Average£193FlexibilityNo 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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