Cheap flights from Northern Ireland to London from £21

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to London departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap return flights

Ryanair Logo
21:40 - 23:00BFS-STN
1h 20mdirect
Ryanair Logo
20:15 - 21:30STN-BFS
1h 15mdirect
£39Ryanair
Find Deal
Fri, 3 Oct - Mon, 6 Oct
easyJet Logo
20:25 - 21:40BFS-STN
1h 15mdirect
easyJet Logo
08:50 - 10:10STN-BFS
1h 20mdirect
£40easyJet
Find Deal
Fri, 10 Oct - Sun, 12 Oct
easyJet Logo
20:00 - 21:20BHD-LTN
1h 20mdirect
easyJet Logo
13:10 - 14:25LTN-BHD
1h 15mdirect
£40easyJet
Find Deal
Thu, 6 Nov - Sun, 9 Nov
Multiple Airlines Logo
20:05 - 21:20BFS-STN
1h 15mdirect
Multiple Airlines Logo
08:30 - 09:45STN-BFS
1h 15mdirect
£47Multiple Airlines
Find Deal
Thu, 16 Oct - Mon, 20 Oct
Multiple Airlines Logo
06:35 - 07:55BFS-STN
1h 20mdirect
Multiple Airlines Logo
08:30 - 09:45STN-BFS
1h 15mdirect
£48Multiple Airlines
Find Deal
Thu, 16 Oct - Mon, 20 Oct
Ryanair Logo
23:30 - 00:50BFS-STN
1h 20mdirect
Ryanair Logo
09:10 - 10:25STN-BFS
1h 15mdirect
£63Ryanair
Find Deal
Sun, 28 Sep - Tue, 30 Sep
British Airways Logo
06:45 - 08:20BHD-LHR
1h 35mdirect
British Airways Logo
07:00 - 08:25LHR-BHD
1h 25mdirect
£72British Airways
Find Deal
Fri, 5 Dec - Mon, 8 Dec
British Airways Logo
19:00 - 20:20BHD-LHR
1h 20mdirect
British Airways Logo
11:40 - 13:05LHR-BHD
1h 25mdirect
£73British Airways
Find Deal
Sat, 18 Oct - Mon, 20 Oct
Ryanair Logo
07:50 - 09:10BFS-STN
1h 20mdirect
Ryanair Logo
16:15 - 17:35STN-BFS
1h 20mdirect
£79Ryanair
Find Deal
Fri, 31 Oct - Fri, 31 Oct
KLM Logo
06:30 - 16:35BHD-LCY
10h 05m1 stop
KLM Logo
10:00 - 21:00LCY-BHD
11h 00m1 stop
£193KLM
Find Deal
Fri, 6 Mar - Sat, 7 Mar

British Airways flights from Northern Ireland to London

Our best British Airways deals on Northern Ireland to London flight tickets
British Airways
5 Dec
BHD06:45Belfast City
1h 35m
LHR08:20London Heathrow
8 Dec
LHR07:00London Heathrow
1h 25m
BHD08:25Belfast City
British Airways
18 Oct
BHD19:00Belfast City
1h 20m
LHR20:20London Heathrow
20 Oct
LHR11:40London Heathrow
1h 25m
BHD13:05Belfast City
British Airways
29 Oct
BHD19:25Belfast City
1h 20m
LHR20:45London Heathrow
3 Nov
LHR08:55London Heathrow
1h 25m
BHD10:20Belfast City

KLM flights from Northern Ireland to London

Our best KLM deals on Northern Ireland to London flight tickets
KLM
6 Mar
BHD06:30Belfast City
10h 05m
1 stop
LCY16:35London City
7 Mar
LCY10:00London City
11h 00m
1 stop
BHD21:00Belfast City
KLM
27 Sept
BHD06:30Belfast City
9h 45m
1 stop
LHR16:15London Heathrow
30 Sept
LHR17:10London Heathrow
4h 05m
1 stop
BHD21:15Belfast City

momondo 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, momondo users made 279,928 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from Northern Ireland to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Fri 3/10

21:40-23:00

Nonstop1h 20m

London Stansted

Mon 6/10

20:15-21:30

Nonstop1h 15m

£39

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Fri 10/10

20:25-21:40

Nonstop1h 15m

London Stansted

Sun 12/10

08:50-10:10

Nonstop1h 20m

£40

BelfastLondon

BHD - LTN

BHDLTN

Belfast City

Thu 6/11

20:00-21:20

Nonstop1h 20m

London Luton

Sun 9/11

13:10-14:25

Nonstop1h 15m

£40

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Thu 16/10

20:05-21:20

Nonstop1h 15m

London Stansted

Mon 20/10

08:30-09:45

Nonstop1h 15m

£47

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Thu 16/10

06:35-07:55

Nonstop1h 20m

London Stansted

Mon 20/10

08:30-09:45

Nonstop1h 15m

£48

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Sun 28/9

23:30-00:50

Nonstop1h 20m

London Stansted

Tue 30/9

09:10-10:25

Nonstop1h 15m

£63

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Fri 5/12

06:45-08:20

Nonstop1h 35m

London Heathrow

Mon 8/12

07:00-08:25

Nonstop1h 25m

£72

BelfastLondon

BHD - LHR

BHDLHR

Belfast City

Sat 18/10

19:00-20:20

Nonstop1h 20m

London Heathrow

Mon 20/10

11:40-13:05

Nonstop1h 25m

£73

BelfastLondon

BFS - STN

BFSSTN

Belfast Intl

Fri 31/10

07:50-09:10

Nonstop1h 20m

London Stansted

Fri 31/10

16:15-17:35

Nonstop1h 20m

£79

BelfastLondon

BHD - LCY

BHDLCY

Belfast City

Fri 6/3

06:30-16:35

1 stop10h 05m

London City

Sat 7/3

10:00-21:00

1 stop11h 00m

£193

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Northern Ireland to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London?

The cheapest month to fly to London from Northern Ireland is in January. Flight prices, which tend to average around £43, are often lower during this time because this is during the off-season. The month of March is another great option to travel to London, with average flight prices from Northern Ireland averaging around £43.

What is the cheapest day to depart on your flight to London?

Our data shows that Thursday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £66. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Northern Ireland to London for around £76.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £99. Flights in the afternoon are often more expensive, with an average ticket price of £538.

What is the cheapest Northern Ireland to London flight route?

Fly from Belfast Intl to London Gatwick for the best Northern Ireland - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Northern Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £119 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Northern Ireland for as low as £84 on momondo.

What cabin class options are available on Northern Ireland to London flights?

There are 3 cabin classes available to choose from on Northern Ireland to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Northern Ireland to London flights?

No. A direct flight is the cheapest option for a flight between Northern Ireland to London.

Cheap Northern Ireland to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to London

Best price found

£29

Fastest flight time

1h 05m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from Northern Ireland in the past 72 hours is £29. The best return flight deal from Northern Ireland to London found on momondo in the last 72 hours is £37.
The fastest flight from Northern Ireland to London takes 1h 05m
Direct flights go from Northern Ireland to London every day.
There is 1 airport near London: London Luton (LTN)
  • When did momondo last update prices for flights from Northern Ireland to London?

    Prices for flights from Northern Ireland to London are updated daily.

  • How many operators does momondo search for flights from Northern Ireland to London?

  • How old do you have to be to fly from Northern Ireland to London?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to London.

  • What documentation or ID do you need to fly to London?

    The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Northern Ireland to London?

Best airlines flying from Northern Ireland to London

Compare and see reviews for airlines that fly from Northern Ireland to London with momondo
Airline
Rating
Free Cancellation
Price
RyanairPriceFrom £26Free CancellationRating
6.2
113 reviews
Search Ryanair flights
easyJetPriceFrom £29Free CancellationRating
6.9
1,822 reviews
Search easyJet flights
RyanairPriceFrom £50Free CancellationRating
6.8
5,159 reviews
Search Ryanair flights
British AirwaysPriceFrom £74Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
LoganairPriceFrom £129Free CancellationRating
8.2
19 reviews
Search Loganair flights
Aer LingusPriceFrom £170Free CancellationRating
7.2
1,277 reviews
Search Aer Lingus flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Northern Ireland to London for you.

Can I find flights from Northern Ireland to London with flexible booking policies on momondo?

Yes. All flights to London from Northern Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Northern Ireland to London?

Once you have performed a search for Northern Ireland to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Northern Ireland to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Northern Ireland to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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1 adult
Sat 18/10
Sat 25/10

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London