HK$2,851+ Cheap flights to London

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 25-10. Fares are subject to change and may not be available on all flights or dates of travel.
— LON
26 Aug — 2 Sep1
1 adult

Flights to London in 2025

Find the latest flights to London in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 21 August 2025.

Return from

HK$5,451

One-way from

HK$2,851

Popular in

April

Cheapest in

November

Average price

HK$6,803

Good round-trip deal

HK$6,746 or less

Good one-way deal

HK$4,811 or less
Air China
  • Air China
  • 14-10-21-10
  • 3 total stops
  • 45h 45m total
  • Hong Kong to London
25-10
  • 25-10
  • 2 total stops
  • 25h 10m total
  • Hong Kong to London
Highest demand for flights based on searches. 3% potential increase in price (HK$1,571 potential increase over avg. return price).
Cheapest flight prices on average. 1% potential price decrease (HK$788 potential savings vs. average return price).
Average for return flights in August 2025
Price to beat on a round-trip flight from Hong Kong Intl to London.
Price to beat on a one-way flight from Hong Kong Intl to London.

Find flight deals to London

Cheapest flights to London
Explore the most affordable flight options available to London. Find the lowest fares based on data from user searches, with prices last updated on 21 August 2025.

Sun 21-917:45HKG - LHR
1 stop31h 00mAir China
Sat 11-1022:00LHR - HKG
1 stop34h 55mAir China
Deal found 18-8HK$5,459
Fri 5-1208:30HKG - LHR
1 stop17h 25mChina Southern
Sat 27-1221:30LHR - HKG
1 stop17h 30mChina Southern
Deal found 19-8HK$5,467
Tue 7-1018:35HKG - LHR
2 stops30h 10mAir China
Thu 16-1022:00LHR - HKG
1 stop30h 50mAir China
Deal found 20-8HK$5,475
Fri 12-917:05HKG - LGW
1 stop28h 55mChina Eastern
Sun 14-919:00LGW - HKG
1 stop17h 05mChina Eastern
Deal found 19-8HK$5,475
Mon 15-920:15HKG - LGW
1 stop17h 20mMultiple Airlines
Sun 21-911:35LGW - HKG
1 stop18h 10mMultiple Airlines
Deal found 20-8HK$5,483
Sat 13-912:55HKG - LHR
1 stop35h 50mMultiple Airlines
Sun 14-921:00LHR - HKG
1 stop32h 30mMultiple Airlines
Deal found 20-8HK$5,490
Sun 21-923:25HKG - STN
2 stops31h 34mMultiple Airlines
Mon 29-907:05STN - HKG
2 stops26h 35mMultiple Airlines
Deal found 18-8HK$5,490
Wed 20-808:30HKG - LGW
1 stop17h 15mAir China
Fri 12-912:35LGW - HKG
1 stop17h 30mAir China
Deal found 18-8HK$5,490
Thu 6-1123:30HKG - LCY
1 stop21h 20mSWISS
Wed 12-1119:10LCY - HKG
1 stop14h 35mSWISS
Deal found 19-8HK$5,490
Sat 25-1000:15HKG - LHR
1 stop15h 50mSWISS
Wed 5-1118:40LHR - HKG
1 stop15h 05mSWISS
Deal found 19-8HK$5,498
Sat 6-917:05HKG - LGW
1 stop29h 55mChina Eastern
Sun 14-911:35LGW - HKG
1 stop17h 15mChina Eastern
Deal found 20-8HK$5,506
Thu 21-820:50HKG - LHR
2 stops29h 40mHainan Airlines
Mon 25-822:00LHR - HKG
2 stops28h 05mHainan Airlines
Deal found 18-8HK$5,514

Cheapflights Fare Finder

 
Locate flights to London that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 70,647 searches and data was last updated on 21 August 2025.
Use the filters below to find and compare flights to London that are best for you.

Fly from

Hong Kong

Route

Departure

Return

Price

Hong KongLondon

HKG - STN

HKGSTN

Hong Kong Intl

Sun 21-9

23:25-23:59

2 stops31h 34m

London Stansted

Mon 29-9

07:05-16:40

2 stops26h 35m

HK$5,490

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Mon 8-9

20:05-15:00

1 stop25h 55m

London Gatwick

Sun 14-9

11:35-11:50

1 stop17h 15m

HK$5,490

Hong KongLondon

HKG - LCY

HKGLCY

Hong Kong Intl

Thu 6-11

23:30-12:50

1 stop21h 20m

London City

Wed 12-11

19:10-17:45

1 stop14h 35m

HK$5,490

Hong KongLondon

HKG - LCY

HKGLCY

Hong Kong Intl

Sun 7-12

23:30-08:35

1 stop17h 05m

London City

Sun 15-2

17:15-16:25

1 stop15h 10m

HK$5,490

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Sun 16-11

23:30-16:40

2 stops25h 10m

London Heathrow

Thu 20-11

14:25-17:45

2 stops19h 20m

HK$5,514

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Tue 9-9

20:05-06:30

1 stop17h 25m

London Gatwick

Tue 30-9

18:00-12:45

1 stop35h 45m

HK$5,529

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Thu 18-9

20:15-21:00

2 stops31h 45m

London Gatwick

Mon 22-9

07:20-11:45

2 stops21h 25m

HK$5,529

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Tue 9-9

20:05-15:00

1 stop25h 55m

London Gatwick

Sun 14-9

19:00-19:05

1 stop17h 05m

HK$5,537

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Mon 8-9

20:05-06:30

1 stop17h 25m

London Gatwick

Mon 15-9

11:35-11:50

1 stop17h 15m

HK$5,537

Hong KongLondon

HKG - LCY

HKGLCY

Hong Kong Intl

Sun 16-11

23:45-09:15

1 stop17h 30m

London City

Thu 20-11

19:10-17:45

1 stop14h 35m

HK$5,537

Flights are sorted by cheapest return flights first.

Deals found on 19-8

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

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

When is the best time to book a flight to London?

Use this chart to determine the optimal time to book a return flight from Hong Kong to London. Price data was last updated on 8 August 2025.

The best time to book flights to London is 13 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

How long is the flight to London?

On average, a flight from Hong Kong to London takes 16 hours 45 minutes. Flights to London from other popular cities in Hong Kong will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to London?

Use this chart to determine the cheapest time to fly return from Hong Kong to London. Price data was last updated on 18 November 2024.

Users looking for the lowest fares to London should consider flying on Wednesday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday at midday, when prices are usually at their highest.

Weekly flight availability to London

The most flights from Hong Kong to London are scheduled on a Tuesday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

What are the cheapest airlines that fly to London?

The cheapest airlines flying from Hong Kong to London are SWISS, Lufthansa and China Southern.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, 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 London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 21 August 2025.
Read through reviews of airlines serving the United Kingdom, such as Cathay Pacific, SWISS, andAir China. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

Entertainment

7.8

Food

7.3

Overall

7.6

Boarding

7.9

Crew

8.1

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

anish,Aug 2025

HKG - KTM

Journey was way better than on the airbus from Toronto to Hongkong , as the economy seats were better .

FAQs about flying to London

London climate

July and August are usually the warmest months, however, the Great British summer has a reputation for being a washout. January is the coolest month with temperatures in the low single digits (Celsius). Spring and autumn can be very pleasant, as the temperatures are usually higher than the rest of the UK. The rain is heaviest during November when the city averages 6cm (2.5 inches). 

Getting around London

There are tons of options, the best being the Tube. London’s underground system is the fastest and easiest way to get around. Avoid rush hour though unless you like the sardine-in-a-can crush.

London’s iconic double-decker red buses are slower, but they can be found everywhere and won’t be as crowded. Look into getting an Oyster card or Travelcard for travelling on London’s public transport – it will save you money. You can find them at tube stops or newsagents.

Black cabs are everywhere and very comfortable, but very expensive. Minicabs are a cheaper taxi option, but you have to order them ahead of time. Watch out for illegal minicabs that trawl the theatres and nightspots. They might seem like the only late-night option, but single women or those unfamiliar with the area should and find a different way to stay safe.

London is a big city, but many of the tourist attractions are within walking distance or along the River Thames. Take advantage of a sunny day by walking or taking a riverboat.

Driving is not recommended, as parking is near impossible to find and a Congestion Charge will cost you extra when driving into the city’s centre Monday to Friday between 7am and 6pm. Rent a car only if you’d like to head out into the country. You will need to be over 25 and have a licence and a credit card.

What is good to know if travelling to London?

  • Major museums and art galleries are free to visit. These include the world-renowned British Museum, Natural History and Science Museums, Victoria and Albert Museum, Imperial War Museum and National Maritime Museum. There are also smaller, quirkier museums such as The Geffrye Museum, restored 18th-century almshouses with a number of period rooms from 1600 to the present day.
  • The Changing of the Guard at Buckingham Palace is when the new guard exchanges duty with the old guard. It’s a fantastic sight.
  • Hoxton is one of the coolest places in London. It was once the centre of the rag trade. Now, its large factory spaces have been transformed in to uber-cool galleries and artists’ studios.
  • The best place to get a curry is Brick Lane in East London. Jellied eels are not as popular as they once were but if you’d like to try them, the best place, bar none, is M Manze Pie and Eel Shop, the oldest pie-and-mash shop in London.
  • The London Eye, situated on the South Bank of the Thames, offers great views of London. Another vantage point is the gallery of the Monument to the Great Fire of London in the City of London. It was built between 1671 and 1677; its 311 steps leading to an observation deck beneath the shining gold “flame”.
  • When is the best time to fly to London?

    Peak season: Most visitors arrive on flights to London between June and September. Christmas and Easter are other peak times. School holidays – half-term weeks in October, February and May – are very busy. Families flock to the museums and attractions. Shoulder season: Shoulder season is from April to May (excluding Easter) and early September to October. September/October is a great time of year to get cheaper flights and it can be the best time to visit: fewer crowds, cheaper hotel rooms, and better light for photography and bringing out the scenery. Off season: As London is a four-season destination there’s not much of an off-season. The weeks following Christmas and New Year until Easter are fairly quiet.

  • Can I find cheaper flights to London if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to London on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to London?

    Based on reviews from Cheapflights users, SWISS is rated the highest out of the airlines that fly to London.

  • What is the cheapest airport to fly to in London?

    London Gatwick is currently the cheapest airport to fly to in London. One-way flights to London Gatwick typically cost HK$188, while return flights cost around HK$53.

  • How much is a return flight to London?

    A return flight to London will typically cost around HK$100, however they can be found for as little as HK$100.

  • Where does the fastest flight to London depart from?

    For those looking to save time traveling to London, Hong Kong Intl offers the quickest one-way flight (14 hours 10 minutes).

  • Does London Heathrow have rental cars?

    Yes. Those touching down at London Heathrow can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to London Heathrow?

    Yes. London Heathrow has hotels nearby for those requiring accommodations. Aerotel London Heathrow is the closest property to London Heathrow (0.0 km away from London Heathrow).

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Kingston upon Thames
Slough
Buckingham
Gatwick
Richmond
Wembley
Guildford
Maidstone
Enfield
Luton
Croydon
Hounslow
Newmarket
Southall

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