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Cheap flights from Northern Ireland to London from £18

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — LON
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Northern Ireland to London

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to London
Explore the most affordable flight options available from Northern Ireland to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Fri 12/1221:05BFS - LTN
Nonstop1h 10measyJet
Mon 15/1207:00LTN - BFS
Nonstop1h 20measyJet
Deal found 13/11£40
Wed 24/1220:50BFS - LGW
Nonstop1h 25measyJet
Fri 2/106:40LGW - BFS
Nonstop1h 40measyJet
Deal found 12/11£40
Thu 27/1106:00BFS - STN
Nonstop1h 20measyJet
Mon 1/1207:50STN - BFS
Nonstop1h 20measyJet
Deal found 12/11£40
Thu 27/1121:00BFS - LTN
Nonstop1h 10measyJet
Sun 30/1107:05LTN - BFS
Nonstop1h 20measyJet
Deal found 13/11£40
Sun 16/1105:45BFS - STN
Nonstop1h 20mRyanair
Tue 18/1107:45STN - BFS
Nonstop1h 20mRyanair
Deal found 12/11£40
Fri 28/1121:05BFS - LTN
Nonstop1h 10measyJet
Sun 30/1107:05LTN - BFS
Nonstop1h 20measyJet
Deal found 12/11£41
Thu 4/1220:00BHD - LTN
Nonstop1h 20measyJet
Mon 8/1208:00LTN - BHD
Nonstop1h 25measyJet
Deal found 11/11£41
Tue 16/1217:35BFS - LGW
Nonstop1h 25measyJet
Wed 17/1206:25LGW - BFS
Nonstop1h 30measyJet
Deal found 12/11£41
Fri 21/1118:00BFS - STN
Nonstop1h 20mRyanair
Sun 23/1107:30STN - BFS
Nonstop1h 20mRyanair
Deal found 12/11£41
Wed 10/1214:15BFS - LGW
Nonstop1h 25measyJet
Wed 17/1206:25LGW - BFS
Nonstop1h 30measyJet
Deal found 12/11£42
Wed 24/1207:00BFS - LTN
Nonstop1h 10measyJet
Fri 2/107:00LTN - BFS
Nonstop1h 20measyJet
Deal found 13/11£43
Thu 11/1220:05BFS - LGW
Nonstop1h 25measyJet
Sat 13/1206:10LGW - BFS
Nonstop1h 30measyJet
Deal found 12/11£43

Cheap flight deals from Northern Ireland to London

Keep the following information in mind while searching for Northern Ireland to London flight deals. Data was last updated 14 November 2025.

Round-trip from

£40

One-way from

£18

Popular in

June

Cheapest in

January

Average price

£50

Good round-trip deal

£35 or less

Good one-way deal

£32 or less
easyJet
  • easyJet
  • 12/12-15/12
  • Nonstop
  • 2h 30m total
  • Northern Ireland to London
Search Deals
easyJet
  • easyJet
  • 15/12
  • Nonstop
  • 1h 10m total
  • Northern Ireland to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£16 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
Search Deals
Price to beat on a round-trip flight from Northern Ireland to London (LON).
Search Deals
Price to beat on a one-way flight from Northern Ireland to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to London 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 14 November 2025.
Use the filters below to find and compare flights from Northern Ireland to London that are best for you.

Fly from

Northern Ireland

Fly to

London

Route

Depart

Return

Price

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Fri 12/12

21:05-22:15

Nonstop1h 10m

London Luton

Mon 15/12

07:00-08:20

Nonstop1h 20m

£40

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Fri 12/12

18:00-19:20

Nonstop1h 20m

London Stansted

Sun 14/12

07:30-08:50

Nonstop1h 20m

£40

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Wed 14/1

06:30-08:00

Nonstop1h 30m

London Gatwick

Mon 19/1

18:40-20:10

Nonstop1h 30m

£40

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Wed 14/1

06:30-08:00

Nonstop1h 30m

London Gatwick

Wed 14/1

16:25-17:55

Nonstop1h 30m

£40

BelfastLondon

BFS - LGW

BFSLGW

Belfast Intl

Wed 24/12

20:50-22:15

Nonstop1h 25m

London Gatwick

Fri 2/1

06:40-08:20

Nonstop1h 40m

£40

BelfastLondon

BHD - LGW

BHDLGW

Belfast City

Wed 14/1

07:25-08:55

Nonstop1h 30m

London Gatwick

Wed 14/1

12:05-13:35

Nonstop1h 30m

£40

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Wed 10/12

08:50-10:00

Nonstop1h 10m

London Luton

Wed 10/12

12:55-14:10

Nonstop1h 15m

£40

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Thu 27/11

21:00-22:10

Nonstop1h 10m

London Luton

Sun 30/11

07:05-08:25

Nonstop1h 20m

£40

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Fri 28/11

21:05-22:15

Nonstop1h 10m

London Luton

Sun 30/11

07:05-08:25

Nonstop1h 20m

£41

BelfastLondon

BFS - LTN

BFSLTN

Belfast Intl

Wed 24/12

21:00-22:15

Nonstop1h 15m

London Luton

Fri 2/1

07:00-08:20

Nonstop1h 20m

£43

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 60 results
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Best time to book a flight from Northern Ireland to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, March is the cheapest month in which you can book a flight from Northern Ireland to London (average of £14). Flying from Northern Ireland to London in July is currently the most expensive (average of £48). 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 LON?

Find hourly flight availability from Northern Ireland to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 November 2025.

It’s optimal to fly from Northern Ireland to London in the evening. By choosing this option you can save up to 48% 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?

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

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

Weekly flight availability from Northern Ireland to London

Explore weekly flight availability from Northern Ireland to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 14 November 2025.

The most flights from GBNIR to LON are scheduled on a Thursday (14 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

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

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to London. 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?

    easyJet, Ryanair, and British Airways can get you from Northern Ireland to London in just under 1h 10m. Your travel time will be generally consistent. The distance from Northern Ireland to London is about 308 mi. Most flights are nonstop.

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

    Most travelers choose Belfast Intl - London Gatwick, Belfast Intl - London Luton or Belfast Intl - London Heathrow when deciding on the best route from Northern Ireland to London.

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

    Yes. In addition to deals on Northern Ireland to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to London.

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

    Yes. Cheapflights offers flight deals from Northern Ireland to London 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?

    Currently, March is the cheapest month in which you can book a flight from Northern Ireland to London (average of £14). Flying from Northern Ireland to London in July is currently the most expensive (average of £48). 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?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Luton
Ilford
Wembley
Deal
Hayes
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Watford
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Crawley
Brentford
Romford
Chichester
Ipswich
Bedford
Eastbourne

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Alternative routes for Northern Ireland to London

See prices for flight routes from nearby airports that may be better suited for you.
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Belfast City to Gatwick flights
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Aberdeen to Heathrow flights
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London City to Manchester flights
Manchester to Stansted flights
Stansted to Manchester flights
Belfast City to Luton flights
Manchester to Luton flights
Heathrow to Newcastle upon Tyne flights
Luton to Manchester flights
Belfast Intl to Stansted flights
Manchester to London City flights
Belfast City to Stansted flights
Aberdeen to Gatwick flights
Belfast City to Manchester flights
Prestwick to Gatwick flights
Heathrow to Newquay flights

Top 6 airlines flying from Northern Ireland to London

Discover the top 6 airlines that operate flights from Northern Ireland to London. 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£21Average£55FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£28Average£93FlexibilityNo cancel feeOn-time86%
Search easyJet flights
RyanairCheapest£49Average£65FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£78Average£159FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£136Average£208FlexibilityNo cancel feeOn-time79%
Search Loganair flights
Aer LingusCheapest£176Average£228FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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 London?

Cheapflights helps you search for flights from Northern Ireland to London 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 London?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to London 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 London become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

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