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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 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LHR
20 Jul — 27 Jul1
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 15 July 2025.

Round-trip from

£85

One-way from

£51

Popular in

June

Cheapest in

January

Average price

£94

Good round-trip deal

£245 or less

Good one-way deal

£70 or less
British Airways
  • British Airways
  • 9/11-17/11
  • Nonstop
  • 2h 45m total
  • Northern Ireland to London
Search Deals
British Airways
  • British Airways
  • 21/11
  • Nonstop
  • 1h 20m total
  • Northern Ireland to London
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£16 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 July 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 15 July 2025.

Sun 9/1120:25BHD - LHR
Nonstop1h 20mBritish Airways
Mon 17/1107:00LHR - BHD
Nonstop1h 25mBritish Airways
Deal found 15/7£85
Thu 28/807:00BFS - LHR
1 stop14h 25mMultiple Airlines
Thu 4/907:35LHR - BFS
1 stop12h 05mMultiple Airlines
Deal found 14/7£134
Fri 26/920:05BHD - LHR
Nonstop1h 20mMultiple Airlines
Sun 28/921:40LHR - BHD
1 stop10h 55mMultiple Airlines
Deal found 14/7£137
Fri 3/1014:00LDY - LHR
Nonstop1h 30mLoganair
Tue 7/1016:15LHR - LDY
Nonstop1h 25mLoganair
Deal found 14/7£139
Thu 4/906:30LDY - LHR
Nonstop1h 30mMultiple Airlines
Sun 7/921:40LHR - LDY
1 stop9h 40mMultiple Airlines
Deal found 14/7£151
Sun 27/709:05LDY - LHR
Nonstop1h 30mBritish Airways
Wed 30/708:45LHR - LDY
Nonstop1h 30mBritish Airways
Deal found 14/7£383

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 15 July 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

Sun 9/11

20:25-21:45

Nonstop1h 20m

London Heathrow

Mon 17/11

07:00-08:25

Nonstop1h 25m

£85

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Thu 28/8

07:00-21:25

1 stop14h 25m

London Heathrow

Thu 4/9

07:35-19:40

1 stop12h 05m

£134

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 19/9

20:05-21:25

Nonstop1h 20m

London Heathrow

Sun 21/9

21:40-08:35

1 stop10h 55m

£134

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Fri 3/10

14:00-15:30

Nonstop1h 30m

London Heathrow

Tue 7/10

16:15-17:40

Nonstop1h 25m

£139

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Thu 4/9

06:30-08:00

Nonstop1h 30m

London Heathrow

Sun 7/9

21:40-07:20

1 stop9h 40m

£151

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sun 27/7

09:05-10:35

Nonstop1h 30m

London Heathrow

Wed 30/7

08:45-10:15

Nonstop1h 30m

£383

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 21/11

19:35-20:55

Nonstop1h 20m

£51

LondonderryLondon

LDY - LHR

LDYLHR

Londonderry Eglinton

Sun 19/10

09:05-10:35

Nonstop1h 30m

£67

BelfastLondon

BFS - LHR

BFSLHR

Belfast Intl

Sat 20/9

13:40-21:40

1 stop8h 00m

£74

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Wed 12/11

17:20-20:30

1 stop3h 10m

£85

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Showing 1-10 of 12 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 15 July 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.

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 15 July 2025.
See what other customers who have flown with British Airways from Northern Ireland to London Heathrow Airport have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.6
Okay
7,141 reviews
Check prices

Crew

7.6

Entertainment

6.4

Overall

6.6

Boarding

6.8

Comfort

6.7

Food

6.3

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.
British Airways
6.6
Okay
7,141 reviews
British Airways
6.6
Okay
7,141 reviews
Check prices

Crew

7.6

Entertainment

6.4

Overall

6.6

Boarding

6.8

Comfort

6.7

Food

6.3

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.

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 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
Deal
Northampton
Gatwick
Slough
Luton
Wembley
Crawley
Eastbourne
Ilford
Hayes
Ipswich
Southend-on-Sea
Folkestone
Watford
Winchester
Swindon
Maidstone

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 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£31Average£66FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£74Average£142FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£130Average£230FlexibilityNo 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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