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

Austrian Airlines and Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 20h 55m. Your travel time can differ by up to 11h. The distance from London Heathrow Airport to Cambodia is about 6106 mi. This flight may include one or multiple stops.

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 £240 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £287 and Austrian Airlines from £377 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 airlines that fly from London Heathrow Airport to Cambodia?

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

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

When flying from London Heathrow Airport to Cambodia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£360+ Cheap Flights from London Heathrow Airport to Cambodia

Cheap flight deals from Heathrow to Cambodia

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 15 September 2026.

Wed 23/912:35 -

2 stops20h 40m

Wed 21/1019:05 -

2 stops30h 15m

Deal found 14/9£618

Mon 9/1117:45 -

3 stops34h 15m

Mon 23/1116:50 -

2 stops30h 05m

Deal found 11/9£627

Thu 26/1113:45 -

2 stops21h 45m

Fri 4/1209:55 -

2 stops18h 45m

Deal found 12/9£648

Thu 26/1117:45 -

3 stops34h 15m

Fri 4/1216:50 -

2 stops33h 30m

Deal found 12/9£656

Wed 16/922:00 -

2 stops38h 05m

Wed 14/1019:10 -

1 stop27h 45m

Deal found 11/9£665

Thu 3/1206:00 -

2 stops29h 30m

Mon 14/1209:55 -

2 stops18h 45m

Deal found 14/9£670

Tue 13/1019:50 -

1 stop31h 55m

Tue 20/1007:15 -

1 stop16h 35m

Deal found 14/9£752

Tue 27/1006:00 -

3 stops24h 00m

Tue 3/1112:15 -

2 stops24h 40m

Deal found 12/9£764

Tue 13/1006:30 -

3 stops24h 30m

Tue 20/1012:15 -

2 stops30h 10m

Deal found 14/9£822

Wed 7/1009:30 -

2 stops20h 15m

Sat 10/1012:15 -

2 stops24h 15m

Deal found 14/9£826

Wed 14/1006:00 -

3 stops23h 45m

Thu 29/1012:15 -

2 stops24h 40m

Deal found 11/9£833

Sat 26/920:20 -

2 stops41h 20m

Tue 29/907:15 -

1 stop16h 35m

Deal found 12/9£836

Find flight deals from Heathrow to Cambodia

Round-trip from	£627
One-way from	£360
Popular in	July
Cheapest in	November
Average price	£630

9/11-23/11
5 total stops
64h 20m total
London to Cambodia

Search Deals

9/11-31/12
2 total stops
41h 35m total
London to Cambodia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£80 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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

Cheapest return flight

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sat 31/10

21:10-21:45

2 stops41h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£363

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Tue 8/12

22:30-16:55

3 stops35h 25m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£379

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Wed 20/1

21:05-11:00

2 stops30h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£381

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Wed 9/12

07:00-19:40

3 stops29h 40m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£386

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Fri 15/1

06:50-18:05

3 stops28h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£397

Fastest return journey

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sun 1/11

06:00-15:00

3 stops26h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£402

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Thu 14/1

06:50-18:45

3 stops28h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£402

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sun 14/2

21:05-09:15

2 stops29h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£409

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Thu 15/10

22:40-19:35

2 stops38h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£430

LondonKrong Preah Sihanouk

LHR London Heathrow - KOS Krong Preah Sihanouk Sihanoukville

LHRKOS

London Heathrow

Mon 28/9

21:20-09:15

2 stops29h 55m

Krong Preah Sihanouk Sihanoukville

Wed 31/12

00:00-18:00

Nonstop0h 00m

£445

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 23 resultsSorted by cheapest first

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.

LHR-SAI

LHR-KOS

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

LHR-KH0

LHR-SAI

LHR-KOS

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 £582). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £967). 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.

How far ahead should I book a flight from London Heathrow Airport to Cambodia?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Cambodia, you should look to book at least 16 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Cambodia

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

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Singapore Airlines

8.2

Very Good

1,601 reviews

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Thai Airways

7.9

Good

419 reviews

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Air China

7.5

Good

165 reviews

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Etihad Airways

7.3

Good

1,533 reviews

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

China Southern

7.3

Good

172 reviews

Singapore Airlines

8.2

Very Good

1,601 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

Related info for your journey

How long is the flight from London Heathrow Airport to Cambodia?
Austrian Airlines and Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 20h 55m. Your travel time can differ by up to 11h. The distance from London Heathrow Airport to Cambodia is about 6106 mi. This flight may include one or multiple stops.
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 £240 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £287 and Austrian Airlines from £377 one-way.
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 £582). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £967). 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

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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£266	Average£415	FlexibilityNo cancel fee	On-time67%	Search Air China flights
Shenzhen Airlines	Cheapest£407	Average£603	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
China Southern	Cheapest£464	Average£542	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£510	Average£689	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Austrian Airlines	Cheapest£537	Average£684	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
China Eastern	Cheapest£574	Average£658	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Malaysia Airlines	Cheapest£585	Average£778	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
Singapore Airlines	Cheapest£609	Average£805	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Vietnam Airlines	Cheapest£614	Average£812	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Cathay Pacific	Cheapest£703	Average£862	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 £360

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 15 September 2026.

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 15 September 2026.

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 15 September 2026.

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 15 September 2026.

Last-minute flights from Heathrow to CambodiaDiscover last-minute flight deals from Heathrow to Cambodia. Data last updated 15 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Heathrow to CambodiaSearch for one-way flight options from Heathrow to Cambodia. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Search for one-way flight options from Heathrow to Cambodia. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.

Find flight deals from Heathrow to Cambodia

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

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

How far ahead should I book a flight from London Heathrow Airport to Cambodia?

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Cambodia, you should look to book at least 16 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Cambodia

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

Related info for your journey

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?

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.

Complete your trip

Complete your trip to Cambodia by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to

Book a non-stop flight to one of these other cities located in .

Search flights from Heathrow to Cambodia by cabin class

Find flights from Heathrow to Cambodia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Cambodia flights

Browse other Heathrow and Cambodia flight options. Last updated on 15 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Heathrow to Cambodia flights

Consider these flights travelling from Heathrow to Cambodia.

Fly to Cambodia regions

Consider these flights travelling to Cambodia regions.

Top 10 airlines flying from Heathrow to Cambodia

Fly with Cheapflights

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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Travel Smart

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 15 September 2026.

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 15 September 2026.

Last-minute flights from Heathrow to Cambodia
Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 15 September 2026 and is based on user searches.

One-way flights from Heathrow to Cambodia
Search for one-way flight options from Heathrow to Cambodia. Find affordable one-way fares based on user searches. Data last updated 15 September 2026.