How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in Cambodia, such as Siem Reap or Phnom Penh, and flying into London Heathrow Airport, then you can expect flight times to average 24h 50m and 24h 55m, respectively.

What is the cheapest airline that flies from Cambodia to London Heathrow?

Emirates, Etihad Airways, and Vietnam Airlines are the most popular carriers operating from Cambodia to London Heathrow

When did momondo last update prices for flights from Cambodia to London Heathrow Airport?

Prices for flights from Cambodia to London Heathrow Airport were last updated today.

How old do you have to be to fly from Cambodia to London Heathrow Airport?

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 Cambodia to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£371 Cheap Flights from Cambodia to London Heathrow Airport in 2026

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Find the cheapest flights from Cambodia to London

Round-trip

One-way

Recent return flight deals from Cambodia to London

Enter your travel dates to find the best prices.

12:55 - 15:20

SAI

LHR

32h 25m

2 stops

10:00 - 18:55

LHR

SAI

26h 55m

2 stops

£673Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

09:40 - 15:20

SAI

LHR

35h 40m

2 stops

10:00 - 18:55

LHR

SAI

26h 55m

2 stops

£690Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

15:10 - 06:25

SAI

LHR

21h 15m

3 stops

19:30 - 18:55

LHR

SAI

17h 25m

2 stops

£774Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

19:35 - 18:45

SAI

LHR

29h 10m

2 stops

14:45 - 18:55

LHR

SAI

22h 10m

2 stops

£788Etihad Airways

Fri, 18 Sep - Mon, 21 Sep

09:40 - 15:20

SAI

LHR

35h 40m

2 stops

18:55 - 17:10

LHR

SAI

16h 15m

1 stop

£820Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

12:55 - 18:45

SAI

LHR

35h 50m

2 stops

21:45 - 11:15

LHR

SAI

31h 30m

2 stops

£825Etihad Airways

Sun, 21 Jun - Sat, 27 Jun

19:35 - 15:05

SAI

LHR

25h 30m

2 stops

20:45 - 09:00

LHR

SAI

30h 15m

2 stops

£838Etihad Airways

Sat, 11 Jul - Sat, 1 Aug

23:50 - 18:40

SAI

LHR

24h 50m

2 stops

19:50 - 12:15

LHR

SAI

58h 25m

2 stops

£881Emirates

Sat, 11 Jul - Sat, 1 Aug

15:10 - 13:15

SAI

LHR

28h 05m

3 stops

16:00 - 11:15

LHR

SAI

37h 15m

3 stops

£900Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

09:40 - 19:15

SAI

LHR

15h 35m

1 stop

06:00 - 18:55

LHR

SAI

30h 55m

2 stops

£904Multiple Airlines

Mon, 21 Sep - Wed, 23 Sep

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Etihad Airways flights from Cambodia to London Heathrow Airport

Our best Etihad Airways deals on Cambodia to London Heathrow Airport flight tickets

Etihad Airways

18 Sept

SAI19:35Siem Reap–Angkor Intl

29h 10m

2 stops

LHR18:45London Heathrow

21 Sept

LHR14:45London Heathrow

22h 10m

2 stops

SAI18:55Siem Reap–Angkor Intl

£788

Etihad Airways

21 Jun

SAI12:55Siem Reap–Angkor Intl

35h 50m

2 stops

LHR18:45London Heathrow

27 Jun

LHR21:45London Heathrow

31h 30m

2 stops

SAI11:15Siem Reap–Angkor Intl

£825

Etihad Airways

11 Jul

SAI19:35Siem Reap–Angkor Intl

25h 30m

2 stops

LHR15:05London Heathrow

1 Aug

LHR20:45London Heathrow

30h 15m

2 stops

SAI09:00Siem Reap–Angkor Intl

£838

Vietnam Airlines flights from Cambodia to London Heathrow Airport

Our best Vietnam Airlines deals on Cambodia to London Heathrow Airport flight tickets

Vietnam Airlines

21 Sept

SAI19:40Siem Reap–Angkor Intl

28h 10m

1 stop

LHR17:50London Heathrow

23 Sept

LHR18:55London Heathrow

16h 15m

1 stop

SAI17:10Siem Reap–Angkor Intl

£911

Vietnam Airlines

21 Sept

SAI19:40Siem Reap–Angkor Intl

28h 10m

1 stop

LHR17:50London Heathrow

22 Sept

LHR19:50London Heathrow

16h 30m

1 stop

SAI18:20Siem Reap–Angkor Intl

£922

Vietnam Airlines

20 Sept

SAI18:05Siem Reap–Angkor Intl

29h 00m

1 stop

LHR17:05London Heathrow

23 Sept

LHR18:55London Heathrow

16h 15m

1 stop

SAI17:10Siem Reap–Angkor Intl

£994

momondo Fare Finder

Use the filters below to find and compare flights from Cambodia to London Heathrow Airport that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

12:55-15:20

2 stops32h 25m

London Heathrow

Wed 23/9

10:00-18:55

2 stops26h 55m

£673

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

09:40-15:20

2 stops35h 40m

London Heathrow

Wed 23/9

10:00-18:55

2 stops26h 55m

£690

Fastest return journey

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

15:10-06:25

3 stops21h 15m

London Heathrow

Wed 23/9

19:30-18:55

2 stops17h 25m

£774

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Fri 18/9

19:35-18:45

2 stops29h 10m

London Heathrow

Mon 21/9

14:45-18:55

2 stops22h 10m

£788

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

09:40-15:20

2 stops35h 40m

London Heathrow

Wed 23/9

18:55-17:10

1 stop16h 15m

£820

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sun 21/6

12:55-18:45

2 stops35h 50m

London Heathrow

Sat 27/6

21:45-11:15

2 stops31h 30m

£825

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sat 11/7

19:35-15:05

2 stops25h 30m

London Heathrow

Sat 1/8

20:45-09:00

2 stops30h 15m

£838

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sat 11/7

23:50-18:40

2 stops24h 50m

London Heathrow

Sat 1/8

19:50-12:15

2 stops58h 25m

£881

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

15:10-13:15

3 stops28h 05m

London Heathrow

Wed 23/9

16:00-11:15

3 stops37h 15m

£900

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Mon 21/9

09:40-19:15

1 stop15h 35m

London Heathrow

Wed 23/9

06:00-18:55

2 stops30h 55m

£904

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Cambodia to London Heathrow Airport

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

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

In general, June is the cheapest month to fly from Cambodia to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £346. The month of May is another great option to travel to London Heathrow Airport, with average flight prices from Cambodia averaging around £357.

Can stopping save me money on Cambodia to London Heathrow Airport flights?

You could potentially save up to 46% on your flight if you consider stops on a Cambodia to London Heathrow Airport flight.

Cheap Cambodia to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cambodia to London Heathrow Airport

Fastest flight time	24h 50m
Direct flights	None

The fastest flight from Cambodia to London Heathrow Airport takes 24h 50m

There are no direct flights from Cambodia to London Heathrow Airport. There are no popular flight routes from Cambodia to London Heathrow Airport.

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Frequently asked questions about flying from Cambodia to London Heathrow Airport

When did momondo last update prices for flights from Cambodia to London Heathrow Airport?
Prices for flights from Cambodia to London Heathrow Airport were last updated today.
How old do you have to be to fly from Cambodia to London Heathrow Airport?
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 Cambodia to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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Slough

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Bedford

Why use momondo?

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

It is quick and easy to find Cambodia 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 Cambodia to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Cambodia to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Cambodia to London?

momondo provides multiple filters to help you find the best flight to London from Cambodia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Cambodia to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.