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 39h 35m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6236 mi.

What are the cheapest airlines to fly from London Heathrow Airport to Cambodia one-way?

One-way options have recently been found by users for as low as £195 on Shenzhen Airlines. Other airlines that offer cheap prices include China Southern from £306 and Singapore Airlines from £318 one-way.

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, Etihad Airways or Thai Airways 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.

£475+ Flights from London Heathrow Airport to Cambodia

Cheap flight deals from Heathrow to Cambodia

Enter your travel dates to find the best prices.

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 3 December 2025.

Fri 16/111:00LHR - KOS

2 stops39h 35mVietnam Airlines

Fri 23/107:00KOS - LHR

1 stop31h 15mVietnam Airlines

Deal found 2/12£727

Fri 16/108:50LHR - KOS

2 stops19h 55mMultiple Airlines

Fri 23/113:35KOS - LHR

2 stops24h 05mMultiple Airlines

Deal found 2/12£734

Thu 15/106:35LHR - KOS

2 stops23h 30mMultiple Airlines

Thu 22/112:15KOS - LHR

2 stops33h 30mMultiple Airlines

Deal found 30/11£796

Thu 22/117:45LHR - KOS

2 stops32h 50mVietnam Airlines

Mon 26/116:30KOS - LHR

1 stop21h 45mVietnam Airlines

Deal found 1/12£1,093

Last-minute flights from Heathrow to Cambodia
Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 3 December 2025 and is based on user searches.

Thu 15/121:00LHR - KOS

2 stops31h 45mMultiple Airlines

Thu 22/112:15KOS - LHR

1 stop34h 10mMultiple Airlines

Deal found 30/11£794

Fri 16/111:00LHR - KOS

2 stops39h 35mVietnam Airlines

Fri 23/107:00KOS - LHR

1 stop31h 15mVietnam Airlines

Deal found 2/12£727

Fri 16/108:50LHR - KOS

2 stops19h 55mMultiple Airlines

Fri 23/113:35KOS - LHR

2 stops24h 05mMultiple Airlines

Deal found 2/12£734

Thu 22/117:45LHR - KOS

2 stops32h 50mVietnam Airlines

Mon 26/116:30KOS - LHR

1 stop21h 45mVietnam Airlines

Deal found 1/12£1,093

Find flight deals from Heathrow to Cambodia

Round-trip from	£727
One-way from	£475
Popular in	July
Cheapest in	November
Average price	£797

Vietnam Airlines
16/1-23/1
3 total stops
70h 50m total
London to Cambodia

Search Deals

Vietnam Airlines
12/1
2 total stops
39h 35m total
London to Cambodia

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£90 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 December 2025

Search Deals

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

Fri 16/1

11:00-09:35

2 stops39h 35m

Krong Preah Sihanouk Sihanoukville

Fri 23/1

07:00-07:15

1 stop31h 15m

£727

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Fri 16/1

08:50-11:45

2 stops19h 55m

Krong Preah Sihanouk Sihanoukville

Fri 23/1

13:35-06:40

2 stops24h 05m

£734

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 15/1

06:35-13:05

2 stops23h 30m

Krong Preah Sihanouk Sihanoukville

Thu 22/1

12:15-14:45

2 stops33h 30m

£796

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 22/1

17:45-09:35

2 stops32h 50m

Krong Preah Sihanouk Sihanoukville

Mon 26/1

16:30-07:15

1 stop21h 45m

£1,093

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 12/1

11:00-09:35

2 stops39h 35m

£475

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 12/1

08:50-17:10

3 stops25h 20m

£553

Flights are sorted by cheapest return flights first.

Deals found on 1/12

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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £374). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £697). 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, andChina Southern. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Singapore Airlines

8.1

Very Good

1,411 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

1,411 reviews

Singapore Airlines

8.1

Very Good

1,411 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

363 reviews

Singapore Airlines

8.1

Very Good

1,411 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

7.5

Good

120 reviews

Singapore Airlines

8.1

Very Good

1,411 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

1,326 reviews

Singapore Airlines

8.1

Very Good

1,411 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

127 reviews

Singapore Airlines

8.1

Very Good

1,411 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 39h 35m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6236 mi.
What are the cheapest airlines to fly from London Heathrow Airport to Cambodia one-way?
One-way options have recently been found by users for as low as £195 on Shenzhen Airlines. Other airlines that offer cheap prices include China Southern from £306 and Singapore Airlines from £318 one-way.
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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £374). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £697). 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£272	Average£447	FlexibilityNo cancel fee	On-time67%	Search Air China flights
Shenzhen Airlines	Cheapest£389	Average£465	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
China Southern	Cheapest£408	Average£545	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£522	Average£640	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
China Eastern	Cheapest£559	Average£659	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Austrian Airlines	Cheapest£592	Average£753	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
Singapore Airlines	Cheapest£594	Average£761	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Malaysia Airlines	Cheapest£598	Average£724	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
Vietnam Airlines	Cheapest£626	Average£728	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
British Airways	Cheapest£658	Average£823	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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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 £475

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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Cambodia

Best flights from Heathrow to CambodiaDiscover 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 3 December 2025.

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 3 December 2025.

Find flight deals from Heathrow to Cambodia

Keep the following information in mind while searching for Heathrow to Cambodia flight deals. Data was last updated 3 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 3 December 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, andChina Southern. 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 cheapest airlines to fly from London Heathrow Airport to Cambodia one-way?

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

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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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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 3 December 2025.