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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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
30 Mar — 6 Apr1
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 25 March 2025.

Round-trip from

£89

One-way from

£56

Popular in

July

Cheapest in

January

Average price

£50

Good round-trip deal

£199 or less

Good one-way deal

£81 or less
British Airways
  • British Airways
  • 2/5-5/5
  • Nonstop
  • 2h 50m total
  • Northern Ireland to London
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British Airways
  • British Airways
  • 4/6
  • Nonstop
  • 1h 20m total
  • Northern Ireland to London
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Highest demand for flights based on searches. 23% potential increase in price (£15 potential increase over avg. return price).
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Cheapest flight prices on average. 5% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Wed 15/1018:15BHD - LHR
Nonstop1h 20mBritish Airways
Mon 20/1007:45LHR - BHD
Nonstop1h 20mBritish Airways
Deal found 24/3£80
Sat 10/506:30LDY - LHR
Nonstop1h 30mLoganair
Tue 13/520:20LHR - LDY
Nonstop1h 25mLoganair
Deal found 24/3£139
Tue 13/516:40BFS - LHR
1 stop6h 00mMultiple Airlines
Wed 14/506:45LHR - BFS
1 stop4h 35mMultiple Airlines
Deal found 24/3£160
Sat 10/506:30LDY - LHR
Nonstop1h 30mMultiple Airlines
Tue 13/521:35LHR - LDY
1 stop18h 00mMultiple Airlines
Deal found 24/3£161
Fri 29/817:00BHD - LHR
1 stop4h 10mMultiple Airlines
Sun 31/810:55LHR - BHD
Nonstop1h 20mMultiple Airlines
Deal found 24/3£169
Fri 23/518:05LDY - LHR
Nonstop1h 30mBritish Airways
Sun 25/520:20LHR - LDY
Nonstop1h 25mBritish Airways
Deal found 23/3£237
Sat 29/317:20BHD - LHR
1 stop13h 20mKLM
Tue 1/409:55LHR - BHD
1 stop7h 00mKLM
Deal found 24/3£343

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 25 March 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

Fri 2/5

11:55-13:20

Nonstop1h 25m

London Heathrow

Mon 5/5

11:40-13:05

Nonstop1h 25m

£89

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sat 10/5

06:30-08:00

Nonstop1h 30m

London Heathrow

Tue 13/5

20:20-21:45

Nonstop1h 25m

£139

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Tue 13/5

16:40-22:40

1 stop6h 00m

London Heathrow

Wed 14/5

06:45-11:20

1 stop4h 35m

£160

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sat 10/5

06:30-08:00

Nonstop1h 30m

London Heathrow

Tue 13/5

21:35-15:35

1 stop18h 00m

£161

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 29/8

17:00-21:10

1 stop4h 10m

London Heathrow

Sun 31/8

10:55-12:15

Nonstop1h 20m

£169

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Fri 23/5

18:05-19:35

Nonstop1h 30m

London Heathrow

Sun 25/5

20:20-21:45

Nonstop1h 25m

£237

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sun 6/4

06:30-20:55

1 stop14h 25m

London Heathrow

Wed 9/4

19:15-21:15

1 stop26h 00m

£492

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 23/5

10:20-20:20

2 stops10h 00m

London Heathrow

Sun 25/5

08:50-17:40

2 stops8h 50m

£616

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 4/6

20:15-21:35

Nonstop1h 20m

£56

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Mon 31/3

12:35-14:15

1 stop25h 40m

£75

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 14 results
1
2

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 25 March 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.

Rainfall in Heathrow by month

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

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

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 25 March 2025.
To help decide which airline to fly from Northern Ireland to London, see what other customers have to say about KLM, 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.
KLM
7.8
Good
1,318 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,318 reviews
KLM
7.8
Good
1,318 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Aer Lingus
7.0
Good
1,061 reviews
KLM
7.8
Good
1,318 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,712 reviews
KLM
7.8
Good
1,318 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.1

Overall

7.8

Crew

8.4

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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?

    The cheapet airlines for a one-way flight from Northern Ireland to London Heathrow Airport are British Airways (£56), Loganair (£78), and Aer Lingus (£148).

  • 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

Travelling to a place near Northern Ireland?

Book flights to Northern Ireland if you plan to visit one of these locations
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

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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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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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£33Average£77FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£76Average£145FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£134Average£212FlexibilityNo 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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