How long is the flight from London Heathrow Airport to Cambodia?

Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 20h 15m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6236 mi.

In terms of precipitation, rainfall in Cambodia ranges from 0.0 - 250.0 inches per month. October is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Cambodia when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Cambodia, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 25.0 C).

What are the most popular routes from London Heathrow Airport to Cambodia?

Most travelers choose London Heathrow - Phnom Penh Pochentong, London Heathrow - Krong Preah Sihanouk Sihanoukville or London Heathrow - Siem Reap when deciding on the best route from London Heathrow Airport to Cambodia.

What are the most popular airlines that fly from London Heathrow Airport to Cambodia?

Consider China Southern, Air China or Singapore Airlines when booking your flight. These represent the most popular airlines when flying from London Heathrow Airport to Cambodia.

Can I find deals for flights from Heathrow to Cambodia that include hotel bookings?

Yes. In addition to deals on Heathrow to Cambodia flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to Cambodia?

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

Can I find deals for business class flights from Heathrow to Cambodia?

Yes. Cheapflights offers flight deals from Heathrow to Cambodia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£727+ Flights from London Heathrow Airport to Cambodia

Cheap flight deals from Heathrow to Cambodia

Round-trip from	£727
Popular in	July
Cheapest in	November
Average price	£597

1/12-8/12
4 total stops
60h 05m total
London to Cambodia

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£86 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Heathrow to Cambodia

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Cambodia
Explore the most affordable flight options available from Heathrow to Cambodia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Mon 1/1218:45LHR - KOS

2 stops35h 20mMultiple Airlines

Mon 8/1213:35KOS - LHR

2 stops24h 45mMultiple Airlines

Deal found 17/10£727

Tue 11/1106:20LHR - KOS

2 stops20h 15mVietnam Airlines

Thu 20/1110:45KOS - LHR

2 stops27h 30mVietnam Airlines

Deal found 15/10£791

Tue 11/1120:10LHR - KOS

2 stops40h 20mMultiple Airlines

Thu 20/1112:15KOS - LHR

3 stops36h 20mMultiple Airlines

Deal found 15/10£798

Sat 15/1122:00LHR - KOS

2 stops32h 05mMultiple Airlines

Fri 28/1113:35KOS - LHR

1 stop32h 50mMultiple Airlines

Deal found 16/10£894

Best flights from Heathrow to Cambodia
Discover carefully curated flight deals from Heathrow to Cambodia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 17 October 2025.

Mon 1/1218:45LHR - KOS

2 stops35h 20mMultiple Airlines

Mon 8/1213:35KOS - LHR

2 stops24h 45mMultiple Airlines

Deal found 17/10£727

Tue 11/1106:20LHR - KOS

2 stops20h 15mVietnam Airlines

Thu 20/1110:45KOS - LHR

2 stops27h 30mVietnam Airlines

Deal found 15/10£791

Mon 9/319:20LHR - KOS

2 stops34h 45mMultiple Airlines

Sun 15/313:35KOS - LHR

2 stops24h 05mMultiple Airlines

Deal found 17/10£735

Tue 11/1120:10LHR - KOS

2 stops40h 20mMultiple Airlines

Thu 20/1112:15KOS - LHR

3 stops36h 20mMultiple Airlines

Deal found 15/10£798

Sat 7/306:00LHR - KOS

3 stops24h 05mMultiple Airlines

Fri 20/317:40KOS - LHR

3 stops31h 55mMultiple Airlines

Deal found 16/10£861

Last-minute flights from Heathrow to Cambodia
Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 17 October 2025 and is based on user searches.

Tue 11/1106:20LHR - KOS

2 stops20h 15mVietnam Airlines

Thu 20/1110:45KOS - LHR

2 stops27h 30mVietnam Airlines

Deal found 15/10£791

Tue 11/1120:10LHR - KOS

2 stops40h 20mMultiple Airlines

Thu 20/1112:15KOS - LHR

3 stops36h 20mMultiple Airlines

Deal found 15/10£798

Sat 15/1122:00LHR - KOS

2 stops32h 05mMultiple Airlines

Fri 28/1113:35KOS - LHR

1 stop32h 50mMultiple Airlines

Deal found 16/10£894

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 1/12

18:45-13:05

2 stops35h 20m

Krong Preah Sihanouk Sihanoukville

Mon 8/12

13:35-07:20

2 stops24h 45m

£727

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 9/3

19:20-13:05

2 stops34h 45m

Krong Preah Sihanouk Sihanoukville

Sun 15/3

13:35-06:40

2 stops24h 05m

£735

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 11/11

06:20-09:35

2 stops20h 15m

Krong Preah Sihanouk Sihanoukville

Thu 20/11

10:45-07:15

2 stops27h 30m

£791

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 11/11

20:10-19:30

2 stops40h 20m

Krong Preah Sihanouk Sihanoukville

Thu 20/11

12:15-17:35

3 stops36h 20m

£798

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 7/3

06:00-13:05

3 stops24h 05m

Krong Preah Sihanouk Sihanoukville

Fri 20/3

17:40-18:35

3 stops31h 55m

£861

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Best time to book a flight from Heathrow to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from Heathrow 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 from London Heathrow Airport to Cambodia

What is the cheapest month to book a flight from London Heathrow Airport to Cambodia?

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £393). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £685). 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 LHR to KH?

It’s typically best to fly out from London Heathrow Airport to Cambodia in the evening. Doing so could potentially save you 25% on the flight price compared to flying at midday, which is usually more expensive.

What is the cheapest day to fly from London Heathrow Airport to Cambodia?

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

Reviews of airlines servicing Cambodia

Read through reviews of airlines operating flights from London Heathrow Airport to Cambodia, such as Singapore Airlines, Thai Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Singapore Airlines

8.1

Very Good

1,382 reviews

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Thai Airways

7.8

Good

359 reviews

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Etihad Airways

7.4

Good

1,281 reviews

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

China Southern

7.4

Good

116 reviews

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Air China

7.2

Good

114 reviews

Singapore Airlines

8.1

Very Good

1,382 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

Related info for your journey

How long is the flight from London Heathrow Airport to Cambodia?
Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 20h 15m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6236 mi.
What are the most popular routes from London Heathrow Airport to Cambodia?
Most travelers choose London Heathrow - Phnom Penh Pochentong, London Heathrow - Krong Preah Sihanouk Sihanoukville or London Heathrow - Siem Reap when deciding on the best route from London Heathrow Airport to Cambodia.
Can I find deals for flights from Heathrow to Cambodia that include hotel bookings?
Yes. In addition to deals on Heathrow to Cambodia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Cambodia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Cambodia.
Can I find deals for business class flights from Heathrow to Cambodia?
Yes. Cheapflights offers flight deals from Heathrow to Cambodia 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 London Heathrow Airport to Cambodia?
Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £393). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £685). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to Cambodia

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Top 10 airlines flying from Heathrow to Cambodia

Airline	Cheapest	Average	Flexibility	On-time
Air China	Cheapest£370	Average£440	FlexibilityNo cancel fee	On-time67%	Search Air China flights
Shenzhen Airlines	Cheapest£382	Average£451	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
China Southern	Cheapest£419	Average£529	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£509	Average£636	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
China Eastern	Cheapest£564	Average£648	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Singapore Airlines	Cheapest£584	Average£734	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Malaysia Airlines	Cheapest£596	Average£798	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
Vietnam Airlines	Cheapest£615	Average£717	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
British Airways	Cheapest£647	Average£822	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Cathay Pacific	Cheapest£676	Average£798	FlexibilityNo cancel fee	On-time72%	Search Cathay Pacific flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Cambodia?

Deals for Heathrow to Cambodia flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Cambodia?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Cambodia for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Heathrow to Cambodia with no change fees?

Need flexible booking options for your flight to Cambodia from Heathrow? 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 Heathrow to Cambodia become cheaper?

Of course! You can now track prices for flights from Heathrow to Cambodia and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from London Heathrow Airport to Cambodia from £727

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Cambodia

Keep the following information in mind while searching for Heathrow to Cambodia flight deals. Data was last updated 17 October 2025.

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Cambodia

Cheapest flights from Heathrow to CambodiaExplore the most affordable flight options available from Heathrow to Cambodia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Explore the most affordable flight options available from Heathrow to Cambodia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Heathrow to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Cambodia

What is the cheapest month to book a flight from London Heathrow Airport to Cambodia?

What is the cheapest time of day to fly from LHR to KH?

Find hourly flight availability from Heathrow to Cambodia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 October 2025.

What is the cheapest day to fly from London Heathrow Airport to Cambodia?

Use this chart to determine the cheapest time to fly return from Heathrow to Cambodia. Price data was last updated on 16 December 2024.

Reviews of airlines servicing Cambodia

Read through reviews of airlines operating flights from London Heathrow Airport to Cambodia, such as Singapore Airlines, Thai Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Cambodia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London Heathrow Airport to Cambodia?

What are the most popular routes from London Heathrow Airport to Cambodia?

Can I find deals for flights from Heathrow to Cambodia that include hotel bookings?

How can I find direct flights from Heathrow to Cambodia?

Can I find deals for business class flights from Heathrow to Cambodia?

What is the cheapest month to book a flight from London Heathrow Airport to Cambodia?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Cambodia

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Heathrow to Cambodia

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Cambodia?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Cambodia?

Can Cheapflights find flights from Heathrow to Cambodia with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Cambodia become cheaper?

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Cheapest flights from Heathrow to Cambodia
Explore the most affordable flight options available from Heathrow to Cambodia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.