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Cheap flights from the United Kingdom to London from £18

LHR — LON
18 Sep — 25 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to London

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to London

Thu 3/908:05 -
Nonstop1h 20m
Sun 6/906:45 -
Nonstop1h 35m
Deal found 17/8£33
Wed 2/911:55 -
Nonstop1h 20m
Wed 9/909:55 -
Nonstop1h 35m
Deal found 18/8£34
Wed 2/911:55 -
Nonstop1h 20m
Sat 12/907:25 -
Nonstop1h 35m
Deal found 18/8£35
Sat 21/1121:05 -
Nonstop1h 30m
Sat 28/1119:05 -
Nonstop1h 35m
Deal found 17/8£35
Mon 7/922:20 -
Nonstop1h 20m
Thu 10/917:00 -
Nonstop1h 35m
Deal found 16/8£36
Wed 19/821:10 -
Nonstop1h 30m
Wed 26/809:55 -
Nonstop1h 35m
Deal found 14/8£37
Tue 15/906:05 -
Nonstop1h 25m
Tue 22/913:50 -
Nonstop1h 20m
Deal found 16/8£37
Thu 17/906:05 -
Nonstop1h 20m
Mon 21/919:50 -
Nonstop1h 15m
Deal found 19/8£37
Fri 2/1021:15 -
Nonstop1h 20m
Fri 9/1019:15 -
Nonstop1h 35m
Deal found 18/8£38
Thu 1/1019:45 -
Nonstop1h 20m
Thu 8/1021:35 -
Nonstop1h 15m
Deal found 17/8£38
Wed 30/921:10 -
Nonstop1h 15m
Wed 7/1013:50 -
Nonstop1h 20m
Deal found 16/8£38
Sat 5/921:35 -
Nonstop1h 20m
Sun 13/906:45 -
Nonstop1h 35m
Deal found 18/8£38

Find flight deals from United Kingdom to London

Round-trip from

£33

One-way from

£18

Popular in

May

Cheapest in

November

Average price

£129

Good round-trip deal

£36 or less

Good one-way deal

£19 or less
Ryanair
  • Ryanair
  • 3/9-7/9
  • Nonstop
  • 2h 55m total
  • United Kingdom to London
Search Deals
Ryanair
  • Ryanair
  • 5/9
  • Nonstop
  • 1h 20m total
  • United Kingdom to London
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to London (LON).
Search Deals
Price to beat on a one-way flight from United Kingdom to London (LON).
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from the United Kingdom to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Thu 3/9

08:05-09:25

Nonstop1h 20m

London Stansted

Sun 6/9

06:45-08:20

Nonstop1h 35m

£33

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Fri 4/9

21:15-22:35

Nonstop1h 20m

London Stansted

Fri 11/9

19:15-20:50

Nonstop1h 35m

£33

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Tue 29/9

09:10-10:30

Nonstop1h 20m

London Stansted

Tue 6/10

07:10-08:45

Nonstop1h 35m

£33

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Mon 28/9

22:20-23:40

Nonstop1h 20m

London Stansted

Mon 5/10

06:05-07:40

Nonstop1h 35m

£33

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Sat 12/9

21:35-22:55

Nonstop1h 20m

London Stansted

Sat 19/9

07:25-09:00

Nonstop1h 35m

£35

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Wed 30/9

21:10-22:40

Nonstop1h 30m

London Stansted

Wed 7/10

09:55-11:30

Nonstop1h 35m

£35

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Fri 16/10

21:15-22:35

Nonstop1h 20m

London Stansted

Sun 18/10

06:45-08:20

Nonstop1h 35m

£36

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Fri 9/10

21:15-22:35

Nonstop1h 20m

London Stansted

Thu 15/10

06:05-07:40

Nonstop1h 35m

£36

GlasgowLondon

GLA Glasgow Intl - STN London Stansted

GLASTN

Glasgow Intl

Fri 2/10

21:15-22:35

Nonstop1h 20m

London Stansted

Fri 9/10

19:15-20:50

Nonstop1h 35m

£38

EdinburghLondon

EDI Edinburgh Turnhouse - STN London Stansted

EDISTN

Edinburgh Turnhouse

Sun 20/9

06:05-07:30

Nonstop1h 25m

London Stansted

Wed 23/9

12:00-13:20

Nonstop1h 20m

£38

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to London

Have a flexible travel schedule? Discover the best time to fly to London from United Kingdom with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to London

What is the cheapest month to book a flight from United Kingdom to London?

Currently, January is the cheapest month in which you can book a flight from United Kingdom to London (average of £93). Flying from United Kingdom to London in July is currently the most expensive (average of £123). 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 GB to LON?

It’s typically best to fly out from United Kingdom to London in the evening. Doing so could potentially save you 33% on the flight price compared to flying in the afternoon, which is usually more expensive.

How often are flights from the United Kingdom to London delayed?

About 15% of weekly flights between United Kingdom and London have experienced delays in the past year, with the average delay time being 103 minutes.

What is the most punctual flight time for the United Kingdom to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 14% of flights being delayed.

How far ahead should I book a flight from United Kingdom to London?

To ensure you get the cheapest price possible for a flight from United Kingdom to London, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from United Kingdom to London?

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

Reviews of airlines servicing London

See what other customers who have flown with Ryanair,easyJet, andBritish Airways from the United Kingdom to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Ryanair
6.9
Okay
5,469 reviews
Check prices

Boarding

6.7

Entertainment

5.7

Crew

7.5

Overall

6.9

Comfort

6.5

Food

6.0

Reviews

1 / 20
8.0
Excellent

Nadine,Feb 2026

PSA - STN

The boarding process couldn't be more unpleasant really. We queue for half hour once we have arrived trhough the gate. They let us through the gates even though they have not opened the doors of the plane as yet. i feel like cattle. This time i decided not to bring any cabin luggage so that I could go through the gate last. Then I waited in the sun whilst everyone found their seats. At least 20 minutes. It was like torture. If i had a cabin bag - i would never have been able to put it above me, near my seat (which is always at the front) because the overhead cabin space would have been full. I need to work out a better strategy for next time or beg RyanAir and the cheaper airlines to work out a better boarding process. What do I do???
Ryanair
6.9
Okay
5,469 reviews
Ryanair
6.9
Okay
5,469 reviews
Check prices

Boarding

6.7

Entertainment

5.7

Crew

7.5

Overall

6.9

Comfort

6.5

Food

6.0

Reviews

1 / 20
8.0
Excellent

Nadine,Feb 2026

PSA - STN

The boarding process couldn't be more unpleasant really. We queue for half hour once we have arrived trhough the gate. They let us through the gates even though they have not opened the doors of the plane as yet. i feel like cattle. This time i decided not to bring any cabin luggage so that I could go through the gate last. Then I waited in the sun whilst everyone found their seats. At least 20 minutes. It was like torture. If i had a cabin bag - i would never have been able to put it above me, near my seat (which is always at the front) because the overhead cabin space would have been full. I need to work out a better strategy for next time or beg RyanAir and the cheaper airlines to work out a better boarding process. What do I do???
easyJet
6.9
Okay
1,927 reviews
Ryanair
6.9
Okay
5,469 reviews
Check prices

Boarding

6.7

Entertainment

5.7

Crew

7.5

Overall

6.9

Comfort

6.5

Food

6.0

Reviews

1 / 20
8.0
Excellent

Nadine,Feb 2026

PSA - STN

The boarding process couldn't be more unpleasant really. We queue for half hour once we have arrived trhough the gate. They let us through the gates even though they have not opened the doors of the plane as yet. i feel like cattle. This time i decided not to bring any cabin luggage so that I could go through the gate last. Then I waited in the sun whilst everyone found their seats. At least 20 minutes. It was like torture. If i had a cabin bag - i would never have been able to put it above me, near my seat (which is always at the front) because the overhead cabin space would have been full. I need to work out a better strategy for next time or beg RyanAir and the cheaper airlines to work out a better boarding process. What do I do???
British Airways
6.7
Okay
8,179 reviews
Ryanair
6.9
Okay
5,469 reviews
Check prices

Boarding

6.7

Entertainment

5.7

Crew

7.5

Overall

6.9

Comfort

6.5

Food

6.0

Reviews

1 / 20
8.0
Excellent

Nadine,Feb 2026

PSA - STN

The boarding process couldn't be more unpleasant really. We queue for half hour once we have arrived trhough the gate. They let us through the gates even though they have not opened the doors of the plane as yet. i feel like cattle. This time i decided not to bring any cabin luggage so that I could go through the gate last. Then I waited in the sun whilst everyone found their seats. At least 20 minutes. It was like torture. If i had a cabin bag - i would never have been able to put it above me, near my seat (which is always at the front) because the overhead cabin space would have been full. I need to work out a better strategy for next time or beg RyanAir and the cheaper airlines to work out a better boarding process. What do I do???
Ryanair
6.4
Okay
Ryanair
6.9
Okay
5,469 reviews
Check prices

Boarding

6.7

Entertainment

5.7

Crew

7.5

Overall

6.9

Comfort

6.5

Food

6.0

Reviews

1 / 20
8.0
Excellent

Nadine,Feb 2026

PSA - STN

The boarding process couldn't be more unpleasant really. We queue for half hour once we have arrived trhough the gate. They let us through the gates even though they have not opened the doors of the plane as yet. i feel like cattle. This time i decided not to bring any cabin luggage so that I could go through the gate last. Then I waited in the sun whilst everyone found their seats. At least 20 minutes. It was like torture. If i had a cabin bag - i would never have been able to put it above me, near my seat (which is always at the front) because the overhead cabin space would have been full. I need to work out a better strategy for next time or beg RyanAir and the cheaper airlines to work out a better boarding process. What do I do???

Related info for your journey

  • How long is the flight from United Kingdom to London?

    For as low as £33, Ryanair can have you in London from United Kingdom in 1h 20m. There are 334 mi between United Kingdom and London. Most flights are nonstop.

  • What are the cheapest airlines to fly from United Kingdom to London one-way?

    To fly one-way, consider booking your trip with Ryanair, which is currently one of the cheapest options available, starting at £15. easyJet flights start at £16 while deals on Ryanair start at £43 one-way.

  • What are the most popular routes from United Kingdom to London?

    While some choose either Belfast Intl - London Luton or Edinburgh Turnhouse - London Stansted, Belfast Intl - London Gatwick is the most popular route from United Kingdom to London.

  • Can I find deals for flights from United Kingdom to London that include hotel bookings?

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

  • How can I find direct flights from United Kingdom to London?

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

  • Can I find deals for business class flights from United Kingdom to London?

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to London?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to London (average of £93). Flying from United Kingdom to London in July is currently the most expensive (average of £123). 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
Hounslow
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Wembley
Gatwick
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Ilford
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Barnet
Enfield
Kingston upon Thames
Southall
Watford
Dover
Romford

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for United Kingdom to London

Amsterdam to Stansted flights
Amsterdam to Gatwick flights
Amsterdam to Luton flights
Charles de Gaulle to Heathrow flights
Charles de Gaulle to Gatwick flights
Charles de Gaulle to Luton flights
Charles de Gaulle to London City flights
Orly to Gatwick flights
Duesseldorf Intl to Stansted flights
Frankfurt to Luton flights
Orly to Heathrow flights
Frankfurt to Gatwick flights
Duesseldorf Intl to Luton flights
Duesseldorf Intl to Heathrow flights
Frankfurt to Heathrow flights
Bruxelles-National to Gatwick flights
Bruxelles-National to Stansted flights
Charles de Gaulle to Edinburgh flights
Bruxelles-National to Luton flights
Charles de Gaulle to Southend flights
Vienna to Heathrow flights
Stansted to Edinburgh flights
Frankfurt to London City flights
Duesseldorf Intl to London City flights
Gatwick to Edinburgh flights
Malpensa to Gatwick flights
Cologne to Gatwick flights
Orly to London City flights
Leonardo da Vinci/Fiumicino to Heathrow flights
Luton to Edinburgh flights
Vienna to Stansted flights
Madrid to Gatwick flights
Orly to Luton flights
Heathrow to Edinburgh flights
Amsterdam to London City flights
Malpensa to Heathrow flights
Madrid to Stansted flights
Madrid to Heathrow flights
Madrid to Luton flights
Marseille to Heathrow flights
Berlin to Gatwick flights
Nantes to Gatwick flights
Bruxelles-National to London City flights
Oslo Gardermoen to Heathrow flights
Nantes to Stansted flights
Duesseldorf Intl to Gatwick flights
Lyon to Gatwick flights
Leonardo da Vinci/Fiumicino to Gatwick flights
Nantes to Heathrow flights
Belfast Intl to Gatwick flights

Top 5 airlines flying from United Kingdom to London

AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£18Average£82FlexibilityNo cancel feeOn-time86%
Search easyJet flights
RyanairCheapest£28Average£47FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£36Average£129FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£76Average£128FlexibilityNo cancel feeOn-time70%
Search British Airways flights
KLMCheapest£162Average£197FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to London from United Kingdom today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from United Kingdom to London?

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Can Cheapflights find flights from United Kingdom to London with no change fees?

Need flexible booking options for your flight to London from United Kingdom? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from United Kingdom to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from United Kingdom today and book when prices fit your budget.

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