What are the cheapest airlines to fly from Northern Ireland to London Heathrow Airport one-way?

The cheapet airlines for a one-way flight from Northern Ireland to London Heathrow Airport are British Airways (£50), Loganair (£78), and Aer Lingus (£189).

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.

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

Find a great deal and save up to 104% by booking at least 54 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Northern Ireland to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at £43.

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

January is one of the best times of the year to fly to London Heathrow Airport from Northern Ireland. Prices for January average £61 per person but you can even find prices for as low as £28. The most expensive prices can be found in the month of July. Opting for a January flight can save you 36% on your journey compared to booking in July

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.

£50+ Flights from Northern Ireland to London Heathrow Airport

Cheap flight deals from Northern Ireland to Heathrow

Round-trip from	£83
One-way from	£50
Popular in	July
Cheapest in	January
Average price	£47
Good round-trip deal	£165 or less
Good one-way deal	£69 or less

British Airways
28/4-30/4
Nonstop
2h 40m total
Northern Ireland to London

Search Deals

British Airways
30/4
Nonstop
1h 20m total
Northern Ireland to London

Search Deals

Highest demand for flights based on searches. 25% potential increase in price (£15 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£2 potential savings vs. average return price).

Search Deals

Average for round-trip flights in March 2025

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

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 20 March 2025.

Fri 31/1006:45BHD - LHR

Nonstop1h 35mBritish Airways

Sun 2/1109:45LHR - BHD

Nonstop1h 25mBritish Airways

Deal found 19/3£78

Mon 28/407:55BHD - LHR

1 stop4h 15mMultiple Airlines

Wed 30/406:25LHR - BHD

Nonstop1h 20mMultiple Airlines

Deal found 19/3£130

Tue 29/418:05LDY - LHR

Nonstop1h 30mBritish Airways

Wed 30/408:45LHR - LDY

Nonstop1h 30mBritish Airways

Deal found 19/3£152

Tue 29/416:40BFS - LHR

1 stop5h 10mMultiple Airlines

Wed 30/406:45LHR - BFS

1 stop4h 35mMultiple Airlines

Deal found 19/3£155

Wed 2/418:05LDY - LHR

Nonstop1h 30mLoganair

Mon 21/408:45LHR - LDY

Nonstop1h 30mLoganair

Deal found 20/3£156

Tue 29/418:05LDY - LHR

Nonstop1h 30mMultiple Airlines

Wed 30/406:55LHR - LDY

1 stop8h 40mMultiple Airlines

Deal found 19/3£173

Best flights from Northern Ireland to Heathrow
Discover carefully curated flight deals from Northern Ireland to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 March 2025.

Mon 28/415:25BHD - LHR

Nonstop1h 20mBritish Airways

Wed 30/406:25LHR - BHD

Nonstop1h 20mBritish Airways

Deal found 19/3£83

Mon 28/407:55BHD - LHR

1 stop4h 15mMultiple Airlines

Wed 30/406:25LHR - BHD

Nonstop1h 20mMultiple Airlines

Deal found 19/3£130

Sat 3/506:30LDY - LHR

Nonstop1h 30mLoganair

Sat 10/516:15LHR - LDY

Nonstop1h 25mLoganair

Deal found 19/3£219

Tue 29/418:05LDY - LHR

Nonstop1h 30mBritish Airways

Wed 30/408:45LHR - LDY

Nonstop1h 30mBritish Airways

Deal found 19/3£152

Tue 29/416:40BFS - LHR

1 stop5h 10mMultiple Airlines

Wed 30/406:45LHR - BFS

1 stop4h 35mMultiple Airlines

Deal found 19/3£155

Tue 29/418:05LDY - LHR

Nonstop1h 30mMultiple Airlines

Wed 30/406:55LHR - LDY

1 stop8h 40mMultiple Airlines

Deal found 19/3£173

Direct flights from Northern Ireland to Heathrow
Explore direct flight options from Northern Ireland to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 20 March 2025.

Mon 28/415:25BHD - LHR

Nonstop1h 20mBritish Airways

Wed 30/406:25LHR - BHD

Nonstop1h 20mBritish Airways

Deal found 19/3£83

Tue 29/418:05LDY - LHR

Nonstop1h 30mBritish Airways

Wed 30/408:45LHR - LDY

Nonstop1h 30mBritish Airways

Deal found 19/3£152

Sat 3/506:30LDY - LHR

Nonstop1h 30mLoganair

Sat 10/516:15LHR - LDY

Nonstop1h 25mLoganair

Deal found 19/3£219

Last-minute flights from Northern Ireland to Heathrow
Discover last-minute flight deals from Northern Ireland to Heathrow. Data last updated 20 March 2025 and is based on user searches.

Tue 25/317:15BHD - LHR

1 stop3h 10mMultiple Airlines

Fri 28/306:05LHR - BHD

Nonstop1h 25mMultiple Airlines

Deal found 19/3£146

Tue 25/307:00BFS - LHR

1 stop6h 45mMultiple Airlines

Tue 1/407:05LHR - BFS

1 stop6h 00mMultiple Airlines

Deal found 20/3£193

Tue 25/306:30BHD - LHR

1 stop10h 30mKLM

Sat 29/314:05LHR - BHD

1 stop6h 55mKLM

Deal found 19/3£370

Wed 26/306:30LDY - LHR

Nonstop1h 30mLoganair

Wed 26/320:20LHR - LDY

Nonstop1h 25mLoganair

Deal found 19/3£246

Wed 26/306:30LDY - LHR

Nonstop1h 30mMultiple Airlines

Wed 26/311:25LHR - LDY

1 stop25h 30mMultiple Airlines

Deal found 19/3£387

Thu 27/309:00BHD - LHR

Nonstop1h 30mBritish Airways

Tue 1/416:10LHR - BHD

Nonstop1h 20mBritish Airways

Deal found 19/3£136

Fri 28/307:10BHD - LHR

2 stops9h 40mAer Lingus

Mon 31/308:50LHR - BHD

2 stops8h 50mAer Lingus

Deal found 19/3£1,002

Wed 2/418:05LDY - LHR

Nonstop1h 30mLoganair

Mon 21/408:45LHR - LDY

Nonstop1h 30mLoganair

Deal found 20/3£156

Sat 5/406:30BHD - LHR

1 stop11h 20mKLM

Tue 15/411:45LHR - BHD

1 stop5h 10mKLM

Deal found 20/3£341

Mon 28/415:25BHD - LHR

Nonstop1h 20mBritish Airways

Wed 30/406:25LHR - BHD

Nonstop1h 20mBritish Airways

Deal found 19/3£83

Mon 28/407:55BHD - LHR

1 stop4h 15mMultiple Airlines

Wed 30/406:25LHR - BHD

Nonstop1h 20mMultiple Airlines

Deal found 19/3£130

Tue 29/418:05LDY - LHR

Nonstop1h 30mBritish Airways

Wed 30/408:45LHR - LDY

Nonstop1h 30mBritish Airways

Deal found 19/3£152

One-way flights from Northern Ireland to Heathrow
Search for one-way flight options from Northern Ireland to Heathrow. Find affordable one-way fares based on user searches. Data last updated 20 March 2025.

Wed 30/420:15BHD - LHR

Nonstop1h 20mBritish Airways

Deal found 19/3£50

Wed 26/317:30BFS - LHR

1 stop20h 55mMultiple Airlines

Deal found 19/3£75

Wed 4/606:30LDY - LHR

Nonstop1h 30mLoganair

Deal found 19/3£78

Wed 4/612:10BHD - LHR

1 stop9h 40mMultiple Airlines

Deal found 19/3£85

Wed 4/616:00LDY - LHR

1 stop4h 50mMultiple Airlines

Deal found 18/3£106

Thu 3/410:20BHD - LHR

2 stops9h 05mAer Lingus

Deal found 19/3£189

Mon 21/712:00BHD - LHR

3 stops29h 45mLoganair

Deal found 19/3£470

Cheapflights Fare Finder

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

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Mon 28/4

15:25-16:45

Nonstop1h 20m

London Heathrow

Wed 30/4

06:25-07:45

Nonstop1h 20m

£83

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Mon 28/4

07:55-12:10

1 stop4h 15m

London Heathrow

Wed 30/4

06:25-07:45

Nonstop1h 20m

£130

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Tue 29/4

18:05-19:35

Nonstop1h 30m

London Heathrow

Wed 30/4

08:45-10:15

Nonstop1h 30m

£152

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 29/4

16:40-21:50

1 stop5h 10m

London Heathrow

Wed 30/4

06:45-11:20

1 stop4h 35m

£155

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Tue 29/4

18:05-19:35

Nonstop1h 30m

London Heathrow

Wed 30/4

06:55-15:35

1 stop8h 40m

£173

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sat 3/5

06:30-08:00

Nonstop1h 30m

London Heathrow

Sat 10/5

16:15-17:40

Nonstop1h 25m

£219

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 30/4

20:15-21:35

Nonstop1h 20m

£50

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Wed 26/3

17:30-14:25

1 stop20h 55m

£75

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Wed 4/6

06:30-08:00

Nonstop1h 30m

£78

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 4/6

12:10-21:50

1 stop9h 40m

£85

Flights are sorted by cheapest return flights first.

Deals found on 19/3

Showing 1-10 of 13 results

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?

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.

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

To help decide which airline to fly from Northern Ireland to London, see what other customers have to say about Aer Lingus and British Airways. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Aer Lingus

7.0

Good

1,063 reviews

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

British Airways

6.6

Okay

6,710 reviews

Aer Lingus

7.0

Good

1,063 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Tadhg,Mar 2025

DUB - MAN

Flew Man to BGI. Crew were poor. Both coffee or tea due to a "water issue". Business class meal for gluten free was disappointing. 1903 lounge was excellent.

Related info for your journey

What are the cheapest airlines to fly from Northern Ireland to London Heathrow Airport one-way?
The cheapet airlines for a one-way flight from Northern Ireland to London Heathrow Airport are British Airways (£50), Loganair (£78), and Aer Lingus (£189).
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 £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

Hounslow

Deal

Milton Keynes

Gatwick

Croydon

Slough

Luton

Eastbourne

Northampton

Ilford

Swindon

Hayes

Crawley

Southend-on-Sea

Wembley

Maidstone

Winchester

Ipswich

Watford

Southall

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Northern Ireland to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
easyJet	Cheapest£33	Average£76	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
British Airways	Cheapest£76	Average£145	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Loganair	Cheapest£134	Average£203	FlexibilityNo cancel fee	On-time79%	Search Loganair flights

Fly with Cheapflights

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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Cheap flights from Northern Ireland to London Heathrow Airport from £50

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.

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 20 March 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Northern Ireland to Heathrow

Cheapest flights from Northern Ireland to HeathrowExplore 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 20 March 2025.

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 20 March 2025.

Cheapflights Fare Finder

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

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.

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?

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 20 March 2025.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

To help decide which airline to fly from Northern Ireland to London, see what other customers have to say about Aer Lingus and British Airways. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines to fly from Northern Ireland to London Heathrow Airport one-way?

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

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

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

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

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

Travelling to a place near Northern Ireland?

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.

Top 3 airlines flying from Northern Ireland to Heathrow

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?

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

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

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

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Travel Smart

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 20 March 2025.