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

China Eastern is the most popular carrier operating from London Heathrow to Cambodia

Which airlines fly to Cambodia?

China Southern, Etihad Airways and Thai Airways are the top three most popular airlines that fly to Cambodia from London Heathrow Airport according to our data. China Southern is the first choice among our users, with 34% of people opting to fly with this airline when travelling to Cambodia. Keep in mind that there are 15 different airlines that fly to Cambodia on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from London Heathrow Airport to Cambodia?

The number of operators available for flights from London Heathrow Airport to Cambodia is 13 as of March 2026.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Cambodia.

What documentation or ID do you need to fly to Cambodia?

The required travel and health documents for your Cambodia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Cambodia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£345 Cheap Flights from London Heathrow Airport to Cambodia in 2026

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Find the cheapest flights from London Heathrow Airport to Cambodia

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

21:20 - 08:45

LHR

SAI

29h 25m

2 stops

21:10 - 18:40

SAI

LHR

27h 30m

2 stops

£571Multiple Airlines

Wed, 15 Apr - Wed, 10 Jun

13:50 - 18:45

LHR

SAI

22h 55m

2 stops

09:40 - 21:45

SAI

LHR

18h 05m

2 stops

£586SWISS

Tue, 2 Jun - Tue, 9 Jun

16:15 - 18:45

LHR

SAI

20h 30m

2 stops

19:30 - 07:30

SAI

LHR

42h 00m

2 stops

£596Multiple Airlines

Mon, 27 Apr - Mon, 4 May

08:45 - 18:45

LHR

SAI

28h 00m

2 stops

09:40 - 21:45

SAI

LHR

18h 05m

2 stops

£597SWISS

Sun, 31 May - Tue, 9 Jun

08:45 - 18:45

LHR

SAI

28h 00m

2 stops

09:40 - 21:45

SAI

LHR

18h 05m

2 stops

£599SWISS

Sun, 31 May - Tue, 9 Jun

08:45 - 18:45

LHR

SAI

28h 00m

2 stops

09:40 - 21:45

SAI

LHR

18h 05m

2 stops

£601SWISS

Sun, 31 May - Tue, 9 Jun

21:20 - 20:10

LHR

SAI

64h 50m

3 stops

21:10 - 18:40

SAI

LHR

27h 30m

2 stops

£602China Eastern

Tue, 19 May - Wed, 17 Jun

07:25 - 18:45

LHR

SAI

29h 20m

2 stops

10:30 - 17:40

SAI

LHR

37h 10m

2 stops

£606Lufthansa

Mon, 1 Jun - Mon, 8 Jun

06:55 - 18:45

LHR

SAI

29h 50m

2 stops

10:30 - 17:40

SAI

LHR

37h 10m

2 stops

£607Lufthansa

Mon, 1 Jun - Mon, 8 Jun

13:35 - 18:45

LHR

SAI

23h 10m

2 stops

16:00 - 07:55

SAI

LHR

21h 55m

2 stops

£609Multiple Airlines

Tue, 19 May - Wed, 17 Jun

SWISS flights from London Heathrow Airport to Cambodia

Our best SWISS deals on London Heathrow Airport to Cambodia flight tickets

SWISS

2 Jun

LHR13:50London Heathrow

22h 55m

2 stops

SAI18:45Siem Reap–Angkor Intl

9 Jun

SAI09:40Siem Reap–Angkor Intl

18h 05m

2 stops

LHR21:45London Heathrow

£586

SWISS

31 May

LHR08:45London Heathrow

28h 00m

2 stops

SAI18:45Siem Reap–Angkor Intl

9 Jun

SAI09:40Siem Reap–Angkor Intl

18h 05m

2 stops

LHR21:45London Heathrow

£597

SWISS

31 May

LHR08:45London Heathrow

28h 00m

2 stops

SAI18:45Siem Reap–Angkor Intl

9 Jun

SAI09:40Siem Reap–Angkor Intl

18h 05m

2 stops

LHR21:45London Heathrow

£599

China Eastern flights from London Heathrow Airport to Cambodia

Our best China Eastern deals on London Heathrow Airport to Cambodia flight tickets

China Eastern

19 May

LHR21:20London Heathrow

64h 50m

3 stops

SAI20:10Siem Reap–Angkor Intl

17 Jun

SAI21:10Siem Reap–Angkor Intl

27h 30m

2 stops

LHR18:40London Heathrow

£602

China Eastern

8 Apr

LHR21:20London Heathrow

40h 50m

3 stops

SAI20:10Siem Reap–Angkor Intl

3 Jun

SAI21:10Siem Reap–Angkor Intl

27h 30m

2 stops

LHR18:40London Heathrow

£728

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 15/4

21:20-08:45

2 stops29h 25m

Siem Reap–Angkor Intl

Wed 10/6

21:10-18:40

2 stops27h 30m

£571

Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 2/6

13:50-18:45

2 stops22h 55m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£586

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 27/4

16:15-18:45

2 stops20h 30m

Siem Reap–Angkor Intl

Mon 4/5

19:30-07:30

2 stops42h 00m

£596

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 31/5

08:45-18:45

2 stops28h 00m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£597

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 31/5

08:45-18:45

2 stops28h 00m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£599

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 31/5

08:45-18:45

2 stops28h 00m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£601

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 19/5

21:20-20:10

3 stops64h 50m

Siem Reap–Angkor Intl

Wed 17/6

21:10-18:40

2 stops27h 30m

£602

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 1/6

07:25-18:45

2 stops29h 20m

Siem Reap–Angkor Intl

Mon 8/6

10:30-17:40

2 stops37h 10m

£606

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 1/6

06:55-18:45

2 stops29h 50m

Siem Reap–Angkor Intl

Mon 8/6

10:30-17:40

2 stops37h 10m

£607

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 19/5

13:35-18:45

2 stops23h 10m

Siem Reap–Angkor Intl

Wed 17/6

16:00-07:55

2 stops21h 55m

£609

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 London Heathrow Airport to Cambodia

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

What is the cheapest month to fly to Cambodia?

In general, November is the cheapest month to fly from London Heathrow Airport to Cambodia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £574. If you aren’t able to travel during the month of November, then book flights to Cambodia from London Heathrow Airport during May instead. Flights to Cambodia in May, while not as cheap as those in November, still average around £580.

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

You are more likely to see cheaper flights to Cambodia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Cambodia for around £712 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cambodia from London Heathrow Airport for as low as £618 on momondo.

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

You could potentially save up to 27% on your flight if you consider stops on a London Heathrow Airport to Cambodia flight.

Cheap London Heathrow Airport to Cambodia flight deals and tips

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

Fastest flight time	20h 15m
Direct flights	None

The fastest flight from London Heathrow Airport to Cambodia takes 20h 15m

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

Search flight deals

When did momondo last update prices for flights from London Heathrow Airport to Cambodia?
Prices for flights from London Heathrow Airport to Cambodia refresh daily.
How many operators does momondo search for flights from London Heathrow Airport to Cambodia?
The number of operators available for flights from London Heathrow Airport to Cambodia is 13 as of March 2026.
How old do you have to be to fly from London Heathrow Airport to Cambodia?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Cambodia.
What documentation or ID do you need to fly to Cambodia?
The required travel and health documents for your Cambodia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Cambodia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Heathrow Airport to Cambodia

Compare and see reviews for airlines that fly from London Heathrow Airport to Cambodia with momondo

Airline	Rating	Free Cancellation	Price
Air China	PriceFrom £271	Free Cancellation	Rating 7.3 141 reviews	Search Air China flights
China Southern	PriceFrom £400	Free Cancellation	Rating 7.4 142 reviews	Search China Southern flights
Shenzhen Airlines	PriceFrom £422	Free Cancellation	Rating 7.8 25 reviews	Search Shenzhen Airlines flights
Etihad Airways	PriceFrom £523	Free Cancellation	Rating 7.3 1,426 reviews	Search Etihad Airways flights
Austrian Airlines	PriceFrom £548	Free Cancellation	Rating 7.6 900 reviews	Search Austrian Airlines flights
China Eastern	PriceFrom £558	Free Cancellation	Rating 7.2 198 reviews	Search China Eastern flights
Malaysia Airlines	PriceFrom £597	Free Cancellation	Rating 7.3 295 reviews	Search Malaysia Airlines flights
Singapore Airlines	PriceFrom £602	Free Cancellation	Rating 8.2 1,475 reviews	Search Singapore Airlines flights
Lufthansa	PriceFrom £607	Free Cancellation	Rating 6.8 7,851 reviews	Search Lufthansa flights
Vietnam Airlines	PriceFrom £626	Free Cancellation	Rating 7.7 240 reviews	Search Vietnam Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Cambodia . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 Cambodia from London.

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

Of course. momondo tracks the price of London to Cambodia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Flights to Phnom Penhfrom £664

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Cheap flights from London Heathrow Airport to Cambodia from £345

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

See travel insights to Cambodia from

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

What is the cheapest month to fly to Cambodia?

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

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

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

Which airlines fly to Cambodia?

Cheap London Heathrow Airport to Cambodia flight deals and tips

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

Fastest flight time

Direct flights

Best airlines flying from London Heathrow Airport to Cambodia

Compare and see reviews for airlines that fly from London Heathrow Airport to Cambodia with momondo

Why use momondo?

An easier way to manage your Cambodia trip

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Cambodia

Popular Cities in Cambodia

Popular flights according to clicks in the last 7 days on momondo

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

Fly your favourite airline to Cambodia

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List of cabin classes available on flights landing in Cambodia. Availability may vary depending on flight origin and airline.

Complete your trip to Cambodia

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According to popular flight searches on momondo this year