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 26h 30m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6106 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 £239 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £286 and Austrian Airlines from £375 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.

£327+ 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 10 September 2026.

Thu 3/1206:00 -

2 stops29h 30m

Mon 14/1219:25 -

2 stops19h 55m

Deal found 5/9£607

Wed 9/921:20 -

3 stops40h 50m

Wed 7/1021:10 -

2 stops27h 30m

Deal found 5/9£636

Wed 16/921:20 -

3 stops40h 50m

Wed 14/1021:10 -

2 stops27h 30m

Deal found 9/9£637

Tue 10/1111:30 -

2 stops39h 25m

Thu 3/1209:55 -

2 stops29h 10m

Deal found 5/9£640

Wed 30/906:00 -

2 stops30h 55m

Wed 28/1009:55 -

2 stops29h 10m

Deal found 7/9£644

Tue 10/1108:30 -

2 stops42h 25m

Sat 5/1216:50 -

2 stops24h 55m

Deal found 6/9£657

Wed 21/1017:30 -

2 stops34h 10m

Wed 28/1019:25 -

2 stops19h 40m

Deal found 6/9£662

Mon 16/1106:00 -

3 stops22h 45m

Fri 27/1113:35 -

2 stops35h 45m

Deal found 6/9£762

Tue 6/1019:50 -

1 stop31h 25m

Tue 13/1007:15 -

1 stop16h 35m

Deal found 8/9£770

Mon 19/1006:00 -

3 stops23h 45m

Mon 26/1013:40 -

2 stops35h 45m

Deal found 9/9£779

Sat 14/1106:30 -

3 stops23h 35m

Sat 28/1112:15 -

2 stops25h 20m

Deal found 9/9£837

Sun 25/1008:50 -

2 stops21h 15m

Sun 1/1113:35 -

2 stops35h 40m

Deal found 10/9£843

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 10 September 2026.

Tue 10/1111:00 -

1 stop26h 30m

Thu 3/1217:55 -

1 stop20h 20m

Deal found 6/9£770

Wed 30/906:00 -

2 stops30h 55m

Wed 28/1009:55 -

2 stops18h 45m

Deal found 10/9£776

Wed 13/109:10 -

1 stop23h 50m

Sun 21/216:50 -

1 stop29h 30m

Deal found 9/9£799

Tue 6/1019:50 -

1 stop31h 25m

Tue 13/1007:15 -

1 stop16h 35m

Deal found 8/9£770

Mon 19/1006:00 -

3 stops23h 45m

Mon 26/1013:40 -

2 stops35h 45m

Deal found 7/9£787

Thu 3/1211:00 -

1 stop26h 30m

Mon 14/1218:40 -

1 stop19h 35m

Deal found 6/9£778

Mon 16/1106:00 -

3 stops22h 45m

Fri 27/1113:35 -

3 stops33h 20m

Deal found 6/9£802

Sat 14/1106:30 -

3 stops23h 35m

Sat 28/1112:15 -

2 stops25h 20m

Deal found 9/9£837

Wed 30/918:55 -

1 stop16h 15m

Wed 28/1021:30 -

2 stops40h 45m

Deal found 10/9£845

Sun 25/1008:50 -

2 stops21h 15m

Sun 1/1113:35 -

2 stops35h 40m

Deal found 10/9£843

Fri 13/1111:00 -

2 stops26h 30m

Fri 20/1121:30 -

1 stop16h 45m

Deal found 7/9£896

Tue 6/1006:55 -

2 stops20h 20m

Tue 13/1007:15 -

2 stops39h 40m

Deal found 8/9£860

Thu 1/1006:30 -

3 stops24h 30m

Mon 12/1013:30 -

2 stops28h 55m

Deal found 7/9£888

Thu 19/1111:00 -

1 stop15h 35m

Tue 8/1217:50 -

2 stops20h 25m

Deal found 6/9£941

Sat 24/1021:20 -

2 stops30h 15m

Sat 31/1017:50 -

3 stops44h 20m

Deal found 9/9£974

Find flight deals from Heathrow to Cambodia

Round-trip from	£607
One-way from	£327
Popular in	July
Cheapest in	November
Average price	£624

Austrian Airlines
3/12-14/12
4 total stops
49h 25m total
London to Cambodia

Search Deals

21/9-31/12
2 total stops
37h 55m total
London to Cambodia

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£82 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

Mon 21/9

22:10-18:05

2 stops37h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£327

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Tue 1/12

10:45-18:05

3 stops48h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£359

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Fri 26/2

07:05-16:05

2 stops26h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£372

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Wed 4/11

06:00-15:00

3 stops26h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£401

Fastest return journey

LondonKrong Preah Sihanouk

LHR London Heathrow - KOS Krong Preah Sihanouk Sihanoukville

LHRKOS

London Heathrow

Wed 4/11

06:00-11:45

3 stops22h 45m

Krong Preah Sihanouk Sihanoukville

Wed 31/12

00:00-18:00

Nonstop0h 00m

£412

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sat 28/11

19:25-18:30

2 stops40h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£420

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Mon 4/1

06:50-09:20

3 stops43h 30m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£425

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sat 14/11

19:25-18:30

2 stops40h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£444

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Fri 1/1

17:45-17:25

3 stops40h 40m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£451

LondonKrong Preah Sihanouk

LHR London Heathrow - KOS Krong Preah Sihanouk Sihanoukville

LHRKOS

London Heathrow

Tue 3/11

21:30-13:05

2 stops56h 35m

Krong Preah Sihanouk Sihanoukville

Wed 31/12

00:00-18:00

Nonstop0h 00m

£461

Flights are sorted by cheapest return flights first.

Deals found on 8/9

Showing 1-10 of 28 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 £579). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £963). 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

1,599 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

1,599 reviews

Singapore Airlines

8.2

Very Good

1,599 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

418 reviews

Singapore Airlines

8.2

Very Good

1,599 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

164 reviews

Singapore Airlines

8.2

Very Good

1,599 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

1,534 reviews

Singapore Airlines

8.2

Very Good

1,599 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

1,599 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?
Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 26h 30m. Your travel time can differ by up to . The distance from London Heathrow Airport to Cambodia is about 6106 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 £239 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £286 and Austrian Airlines from £375 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 £579). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £963). 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

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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£265	Average£397	FlexibilityNo cancel fee	On-time67%	Search Air China flights
Shenzhen Airlines	Cheapest£406	Average£601	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
China Southern	Cheapest£464	Average£541	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£508	Average£683	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
Austrian Airlines	Cheapest£535	Average£682	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
China Eastern	Cheapest£572	Average£655	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Malaysia Airlines	Cheapest£583	Average£801	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
Singapore Airlines	Cheapest£606	Average£798	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Vietnam Airlines	Cheapest£611	Average£808	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
Cathay Pacific	Cheapest£700	Average£859	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 £327

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. 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 10 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 10 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 10 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 10 September 2026.

Last-minute flights from Heathrow to CambodiaDiscover last-minute flight deals from Heathrow to Cambodia. Data last updated 10 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 10 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 10 September 2026.

Search for one-way flight options from Heathrow to Cambodia. Find affordable one-way fares based on user searches. Data last updated 10 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 10 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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Book with Flexibility

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 10 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 10 September 2026.

Last-minute flights from Heathrow to Cambodia
Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 10 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 10 September 2026.