Cheap flights from Hong Kong to London from $339

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Hong Kong to London departing on 12/4. 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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Cheap round-trip flights

 Logo
5:50 pm - 5:50 pmHKG-LHR
32h 00m1 stop
 Logo
9:00 pm - 10:35 amLHR-HKG
29h 35m2 stops
Tue, Oct 28 - Tue, Nov 4
Finnair Logo
9:45 pm - 5:00 pmHKG-LHR
27h 15m1 stop
Finnair Logo
10:20 am - 5:40 pmLHR-HKG
24h 20m1 stop
$666Finnair
Find Deal
Tue, Dec 2 - Thu, May 28
China Eastern Logo
8:20 pm - 6:30 amHKG-LGW
18h 10m1 stop
China Eastern Logo
10:30 am - 11:30 amLGW-HKG
17h 00m1 stop
$671China Eastern
Find Deal
Sun, Oct 26 - Wed, Nov 5
SWISS Logo
11:30 pm - 1:40 pmHKG-LHR
22h 10m2 stops
SWISS Logo
9:00 am - 5:45 pmLHR-HKG
24h 45m2 stops
$673SWISS
Find Deal
Thu, Nov 6 - Sun, Nov 23
SWISS Logo
11:15 pm - 4:35 pmHKG-LHR
24h 20m2 stops
SWISS Logo
8:05 pm - 5:45 pmLHR-HKG
37h 40m1 stop
$674SWISS
Find Deal
Sat, Oct 4 - Sat, Nov 15
China Eastern Logo
5:40 pm - 6:30 amHKG-LGW
20h 50m1 stop
China Eastern Logo
10:30 am - 12:40 pmLGW-HKG
18h 10m1 stop
$686China Eastern
Find Deal
Mon, Oct 27 - Tue, Nov 4
Air China Logo
12:55 pm - 4:55 pmHKG-LHR
35h 00m1 stop
Air China Logo
5:40 pm - 9:50 pmLHR-HKG
20h 10m1 stop
$703Air China
Find Deal
Sat, Oct 25 - Sat, Nov 1
Air China Logo
8:15 pm - 5:35 amHKG-LGW
17h 20m1 stop
Air China Logo
12:35 pm - 1:05 pmLGW-HKG
17h 30m1 stop
$725Air China
Find Deal
Tue, Dec 16 - Tue, Apr 28
British Airways Logo
10:45 pm - 5:35 amHKG-LHR
14h 50mnonstop
British Airways Logo
5:55 pm - 2:50 pmLHR-HKG
12h 55mnonstop
$740British Airways
Find Deal
Fri, Feb 27 - Sun, Mar 15
British Airways Logo
10:45 pm - 5:35 amHKG-LHR
14h 50mnonstop
British Airways Logo
5:55 pm - 2:50 pmLHR-HKG
12h 55mnonstop
$741British Airways
Find Deal
Thu, Nov 6 - Sun, Nov 23

British Airways flights from Hong Kong to London

Our best British Airways deals on Hong Kong to London flight tickets
British Airways
Feb 27
HKG10:45 pmHong Kong Intl
14h 50m
LHR5:35 amLondon Heathrow
Mar 15
LHR5:55 pmLondon Heathrow
12h 55m
HKG2:50 pmHong Kong Intl
British Airways
Nov 6
HKG10:45 pmHong Kong Intl
14h 50m
LHR5:35 amLondon Heathrow
Nov 23
LHR5:55 pmLondon Heathrow
12h 55m
HKG2:50 pmHong Kong Intl
British Airways
Oct 13
HKG11:00 pmHong Kong Intl
14h 30m
LHR6:30 amLondon Heathrow
Oct 29
LHR5:55 pmLondon Heathrow
12h 55m
HKG2:50 pmHong Kong Intl

Finnair flights from Hong Kong to London

Our best Finnair deals on Hong Kong to London flight tickets
Finnair
Dec 2
HKG9:45 pmHong Kong Intl
27h 15m
1 stop
LHR5:00 pmLondon Heathrow
May 28
LHR10:20 amLondon Heathrow
24h 20m
1 stop
HKG5:40 pmHong Kong Intl
Finnair
Feb 26
HKG9:45 pmHong Kong Intl
30h 55m
1 stop
LHR8:40 pmLondon Heathrow
Mar 6
LHR7:30 amLondon Heathrow
27h 35m
1 stop
HKG7:05 pmHong Kong Intl
Finnair
Dec 2
HKG9:45 pmHong Kong Intl
30h 55m
1 stop
LHR8:40 pmLondon Heathrow
May 24
LHR10:20 amLondon Heathrow
24h 25m
1 stop
HKG5:45 pmHong Kong Intl

momondo Fare Finder

 
Customize your flight search to find flights from Hong Kong 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 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Hong Kong to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Tue 10/28

5:50 pm-5:50 pm

1 stop32h 00m

London Heathrow

Tue 11/4

9:00 pm-10:35 am

2 stops29h 35m

$665

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Tue 12/2

9:45 pm-5:00 pm

1 stop27h 15m

London Heathrow

Thu 5/28

10:20 am-5:40 pm

1 stop24h 20m

$666

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Sun 10/26

8:20 pm-6:30 am

1 stop18h 10m

London Gatwick

Wed 11/5

10:30 am-11:30 am

1 stop17h 00m

$671

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Thu 11/6

11:30 pm-1:40 pm

2 stops22h 10m

London Heathrow

Sun 11/23

9:00 am-5:45 pm

2 stops24h 45m

$673

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Sat 10/4

11:15 pm-4:35 pm

2 stops24h 20m

London Heathrow

Sat 11/15

8:05 pm-5:45 pm

1 stop37h 40m

$674

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Mon 10/27

5:40 pm-6:30 am

1 stop20h 50m

London Gatwick

Tue 11/4

10:30 am-12:40 pm

1 stop18h 10m

$686

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Sat 10/25

12:55 pm-4:55 pm

1 stop35h 00m

London Heathrow

Sat 11/1

5:40 pm-9:50 pm

1 stop20h 10m

$703

Hong KongLondon

HKG - LGW

HKGLGW

Hong Kong Intl

Tue 12/16

8:15 pm-5:35 am

1 stop17h 20m

London Gatwick

Tue 4/28

12:35 pm-1:05 pm

1 stop17h 30m

$725

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Fri 2/27

10:45 pm-5:35 am

Nonstop14h 50m

London Heathrow

Sun 3/15

5:55 pm-2:50 pm

Nonstop12h 55m

$740

Hong KongLondon

HKG - LHR

HKGLHR

Hong Kong Intl

Thu 11/6

10:45 pm-5:35 am

Nonstop14h 50m

London Heathrow

Sun 11/23

5:55 pm-2:50 pm

Nonstop12h 55m

$741

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Hong Kong 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 typical price of a round-trip flight between Hong Kong and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Hong Kong is in November. Flight prices, which tend to average around $627, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from Hong Kong averaging around $661.

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

The cheapest day to depart from Hong Kong to London is on a Monday. Travelers who choose to depart for London on a Monday will often find tickets for as low as $962. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,017. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Hong Kong in the evening is the least expensive time of day to depart. momondo users have found prices as low as $970 when looking at flights departing in the evening. Flights to London are more costly in the morning, with an average ticket price of $1,014. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Hong Kong Intl to London flight route?

Fly from Hong Kong Intl to London Heathrow for the best Hong Kong Intl - 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 Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $857 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Hong Kong for as low as $821 on momondo.

What cabin class options are available on Hong Kong Intl to London flights?

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

How have Hong Kong to London flight prices changed over time?

As of September 2025, prices for Hong Kong to London flights are approximately 40% cheaper when compared to flights at the same time last year.

When to book flights from Hong Kong to London

Are you open to changing your travel dates? Check out the ideal times to fly from Hong Kong to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Hong Kong to London (HKG to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Hong Kong to London

Best Price Found

$753

Fastest flight time

14h 00m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from Hong Kong in the past 72 hours is $753. The best round-trip flight deal from Hong Kong to London found on momondo in the last 72 hours is $796.
The fastest flight from Hong Kong to London takes 14h 00m
Direct flights go from Hong Kong to London every day.
There is 1 airport near London: London Heathrow (LHR)
  • How far is Hong Kong Intl to London by plane?

    The straight-line distance from Hong Kong Intl to London is 5975.1 mi. Flights usually cover this in 14h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Hong Kong Intl Airport to London?

    Prices for flights from Hong Kong Intl Airport to London were last updated today.

  • How many operators does momondo search for flights from Hong Kong Intl Airport to London?

  • How old do you have to be to fly from Hong Kong Intl Airport to London?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Hong Kong Intl Airport to London.

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

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Hong Kong to London?

  • What is the most popular airline from Hong Kong to London?

Best airlines flying from Hong Kong to London

Compare and see reviews for airlines that fly from Hong Kong to London with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $300Free CancellationRating
7.5
1,730 reviews
Search SWISS flights
China EasternPriceFrom $467Free CancellationRating
7.2
165 reviews
Search China Eastern flights
Air ChinaPriceFrom $471Free CancellationRating
7.2
99 reviews
Search Air China flights
China SouthernPriceFrom $479Free CancellationRating
7.5
110 reviews
Search China Southern flights
LufthansaPriceFrom $485Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
FinnairPriceFrom $534Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
Thai AirwaysPriceFrom $633Free CancellationRating
7.8
350 reviews
Search Thai Airways flights
British AirwaysPriceFrom $713Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
Cathay PacificPriceFrom $788Free CancellationRating
7.6
993 reviews
Search Cathay Pacific flights
  • Cathay Pacific Flights From Hong Kong to London

    The lowest priced Cathay Pacific flight from Hong Kong to London from the last 72 hours was $788. Generally, Cathay Pacific has 35 flights on this route every week with an average price of $1,047. Cathay Pacific is rated 7.6/10 by our users.

  • British Airways Flights From Hong Kong to London

    British Airways (6.6/10 from 7,361 reviews) operates around 7 flights from Hong Kong to London in any given week. The average British Airways airfare for this route is around $913, with deals from around $713 rare but found on momondo. Referenced prices are for round-trip Hong Kong to London flight searches in the last 72 hours.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Luton
Slough
Milton Keynes
Hayes
Guildford
Dartford
Crawley
Stansted
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Wembley
Richmond
Croydon

Why use momondo?

Why should I use momondo to find a flight deal from Hong Kong to London?

It is quick and easy to find Hong Kong to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

Can I find flights from Hong Kong to London with flexible booking policies on momondo?

Flights from Hong Kong to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Hong Kong to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Hong Kong.

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

Price alerts on flights to London from Hong Kong are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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1 adult
Wed 10/15
Wed 10/22

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