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 British Airways, Air China or Cathay Pacific when booking your flight. These represent the most popular airlines when flying from London Heathrow Airport to Cambodia.

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

Travelers have found it’s best to book a flight 54 days in advance to save up to 16% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 54 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London Heathrow Airport to Cambodia 1-2 weeks in advance for as low as £548, or £872 for flights within the next 24 hours.

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

Our data shows that November tends to be the cheapest month to fly to Cambodia from London Heathrow Airport. Users have commonly found prices around £653 for the month, but tickets can be as low as £399. Due to multiple factors, prepare for potentially higher prices in July.

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.

£375+ Flights from London Heathrow Airport to Cambodia

Cheap flight deals from Heathrow to Cambodia

Round-trip from	£481
One-way from	£375
Popular in	July
Cheapest in	November
Average price	£802

China Southern
3/11-16/11
3 total stops
63h 45m total
London to Cambodia

Search Deals

SWISS
24/11
2 total stops
30h 55m total
London to Cambodia

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£78 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 August 2025

Search Deals

Find flight deals from Heathrow to Cambodia

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 18 August 2025.

Tue 23/922:10LHR - PNH

1 stop34h 20mChina Southern

Sat 4/1008:00PNH - LHR

2 stops38h 15mChina Southern

Deal found 16/8£486

Thu 30/1022:00LHR - PNH

1 stop29h 50mChina Southern

Thu 13/1115:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 16/8£488

Wed 29/1021:30LHR - PNH

2 stops30h 20mChina Southern

Fri 14/1115:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 16/8£491

Mon 3/1122:00LHR - PNH

1 stop33h 35mChina Southern

Sun 23/1111:55PNH - LHR

1 stop37h 20mChina Southern

Deal found 16/8£493

Sat 4/1022:10LHR - PNH

1 stop30h 30mChina Southern

Tue 4/1115:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 16/8£494

Sat 4/1021:00LHR - PNH

2 stops21h 10mChina Southern

Sun 30/1111:55PNH - LHR

1 stop37h 20mChina Southern

Deal found 17/8£495

Wed 12/1117:40LHR - PNH

1 stop22h 30mAir China

Thu 27/1100:25PNH - LHR

1 stop24h 25mAir China

Deal found 17/8£499

Fri 14/1122:00LHR - PNH

1 stop18h 30mChina Southern

Sun 30/1115:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 17/8£500

Sat 4/1022:40LHR - PNH

1 stop18h 25mAir China

Sat 29/1100:25PNH - LHR

1 stop22h 30mAir China

Deal found 17/8£504

Sun 14/915:05LHR - KOS

2 stops36h 10mMultiple Airlines

Sun 21/910:15KOS - LHR

2 stops26h 10mMultiple Airlines

Deal found 17/8£743

Wed 10/918:55LHR - KOS

2 stops32h 20mVietnam Airlines

Wed 17/910:15KOS - LHR

1 stop36h 40mVietnam Airlines

Deal found 16/8£762

Wed 1/1021:05LHR - KOS

3 stops33h 45mMultiple Airlines

Wed 8/1013:20KOS - LHR

2 stops33h 20mMultiple Airlines

Deal found 17/8£769

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 18 August 2025.

Sat 4/1021:00LHR - PNH

2 stops45h 10mChina Southern

Sun 30/1111:55PNH - LHR

1 stop37h 20mChina Southern

Deal found 15/8£482

Sun 14/915:05LHR - KOS

2 stops36h 10mMultiple Airlines

Sun 21/910:15KOS - LHR

2 stops26h 10mMultiple Airlines

Deal found 17/8£743

Wed 10/918:55LHR - KOS

2 stops32h 20mVietnam Airlines

Wed 17/910:15KOS - LHR

1 stop36h 40mVietnam Airlines

Deal found 16/8£762

Sat 4/1021:00LHR - PNH

2 stops21h 10mChina Southern

Tue 4/1115:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 15/8£482

Thu 30/1022:00LHR - PNH

1 stop29h 50mChina Southern

Thu 13/1108:00PNH - LHR

1 stop17h 15mChina Southern

Deal found 15/8£486

Tue 23/922:10LHR - PNH

1 stop34h 20mChina Southern

Sat 4/1008:00PNH - LHR

2 stops38h 15mChina Southern

Deal found 16/8£486

Sun 23/1122:00LHR - PNH

1 stop33h 35mChina Southern

Sat 6/1215:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 15/8£488

Mon 24/1122:00LHR - PNH

1 stop18h 30mChina Southern

Sat 6/1215:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 15/8£488

Wed 1/1021:05LHR - KOS

3 stops33h 45mMultiple Airlines

Wed 8/1013:20KOS - LHR

2 stops33h 20mMultiple Airlines

Deal found 17/8£769

Tue 25/1122:00LHR - PNH

1 stop33h 35mChina Southern

Thu 4/1208:00PNH - LHR

1 stop17h 15mChina Southern

Deal found 15/8£489

Wed 10/916:00LHR - KOS

2 stops35h 15mMultiple Airlines

Wed 17/910:15KOS - LHR

2 stops33h 50mMultiple Airlines

Deal found 16/8£772

Thu 27/1122:00LHR - PNH

1 stop29h 50mChina Southern

Fri 5/1215:50PNH - LHR

1 stop33h 25mChina Southern

Deal found 15/8£489

Last-minute flights from Heathrow to Cambodia
Discover last-minute flight deals from Heathrow to Cambodia. Data last updated 18 August 2025 and is based on user searches.

Sat 23/821:20LHR - PNH

2 stops32h 15mChina Eastern

Wed 3/912:40PNH - LHR

2 stops36h 00mChina Eastern

Deal found 18/8£598

Sat 23/822:10LHR - PNH

1 stop30h 30mChina Southern

Wed 3/912:05PNH - LHR

1 stop36h 55mChina Southern

Deal found 17/8£755

Sat 23/820:50LHR - PNH

2 stops41h 05mMultiple Airlines

Wed 3/921:15PNH - LHR

2 stops51h 55mMultiple Airlines

Deal found 16/8£799

Sun 24/820:25LHR - PNH

2 stops32h 45mMultiple Airlines

Tue 26/800:10PNH - LHR

1 stop24h 30mMultiple Airlines

Deal found 15/8£785

Sun 24/822:40LHR - PNH

2 stops30h 30mMultiple Airlines

Thu 28/812:15PNH - LHR

1 stop37h 45mMultiple Airlines

Deal found 15/8£786

Mon 1/922:10LHR - PNH

1 stop34h 20mChina Southern

Tue 16/912:05PNH - LHR

1 stop36h 55mChina Southern

Deal found 16/8£519

Tue 2/922:40LHR - PNH

2 stops54h 30mAir China

Tue 30/900:20PNH - LHR

1 stop26h 10mAir China

Deal found 16/8£535

Wed 10/918:55LHR - KOS

2 stops32h 20mVietnam Airlines

Wed 17/910:15KOS - LHR

1 stop36h 40mVietnam Airlines

Deal found 16/8£762

Wed 10/916:00LHR - KOS

2 stops35h 15mMultiple Airlines

Wed 17/910:15KOS - LHR

2 stops33h 50mMultiple Airlines

Deal found 16/8£772

Fri 12/922:10LHR - PNH

1 stop30h 30mChina Southern

Fri 26/908:00PNH - LHR

1 stop17h 00mChina Southern

Deal found 17/8£541

Sun 14/915:05LHR - KOS

2 stops36h 10mMultiple Airlines

Sun 21/910:15KOS - LHR

2 stops26h 10mMultiple Airlines

Deal found 17/8£743

Fri 19/922:40LHR - PNH

1 stop18h 25mAir China

Thu 2/1000:20PNH - LHR

1 stop26h 10mAir China

Deal found 17/8£513

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 18 August 2025.

Mon 24/1118:40LHR - PNH

2 stops30h 55mSWISS

Deal found 17/8£375

Fri 6/220:05LHR - PNH

2 stops53h 30mSWISS

Deal found 17/8£377

Sat 6/920:50LHR - PNH

2 stops31h 05mMultiple Airlines

Deal found 17/8£379

Sun 31/821:20LHR - PNH

1 stop19h 55mChina Eastern

Deal found 15/8£384

Tue 26/821:20LHR - PNH

1 stop19h 55mChina Eastern

Deal found 16/8£385

Fri 19/906:30LHR - PNH

3 stops25h 50mMultiple Airlines

Deal found 15/8£389

Thu 28/811:00LHR - PNH

1 stop16h 20mMalaysia Airlines

Deal found 17/8£390

Tue 26/821:35LHR - PNH

1 stop30h 25mMalaysia Airlines

Deal found 16/8£392

Sat 30/821:20LHR - PNH

2 stops32h 15mChina Eastern

Deal found 16/8£393

Sat 6/921:20LHR - PNH

3 stops32h 15mChina Eastern

Deal found 17/8£394

Sun 31/822:05LHR - PNH

1 stop31h 05mShenzhen Airlines

Deal found 17/8£395

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

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 4/10

21:00-00:10

2 stops45h 10m

Phnom Penh Pochentong

Sun 30/11

11:55-18:15

1 stop37h 20m

£482

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sat 4/10

21:00-00:10

2 stops21h 10m

Phnom Penh Pochentong

Tue 4/11

15:50-18:15

1 stop33h 25m

£482

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 30/10

22:00-10:50

1 stop29h 50m

Phnom Penh Pochentong

Thu 13/11

08:00-18:15

1 stop17h 15m

£486

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 23/9

22:10-14:30

1 stop34h 20m

Phnom Penh Pochentong

Sat 4/10

08:00-16:15

2 stops38h 15m

£486

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/11

22:00-14:35

1 stop33h 35m

Phnom Penh Pochentong

Sat 6/12

15:50-18:15

1 stop33h 25m

£488

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 24/11

22:00-23:30

1 stop18h 30m

Phnom Penh Pochentong

Sat 6/12

15:50-18:15

1 stop33h 25m

£488

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Tue 25/11

22:00-14:35

1 stop33h 35m

Phnom Penh Pochentong

Thu 4/12

08:00-18:15

1 stop17h 15m

£489

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Thu 27/11

22:00-10:50

1 stop29h 50m

Phnom Penh Pochentong

Fri 5/12

15:50-18:15

1 stop33h 25m

£489

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Mon 24/11

22:00-10:50

1 stop29h 50m

Phnom Penh Pochentong

Thu 4/12

08:00-18:15

1 stop17h 15m

£489

LondonPhnom Penh

LHR - PNH

LHRPNH

London Heathrow

Sun 23/11

22:00-23:30

1 stop18h 30m

Phnom Penh Pochentong

Thu 4/12

08:00-18:15

1 stop17h 15m

£489

Flights are sorted by cheapest return flights first.

Deals found on 17/8

Showing 1-10 of 26 results

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 £689). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £1,232). 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?

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.

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

1,347 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

1,347 reviews

Singapore Airlines

8.1

Very Good

1,347 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

343 reviews

Singapore Airlines

8.1

Very Good

1,347 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

7.6

Good

106 reviews

Singapore Airlines

8.1

Very Good

1,347 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.

Malaysia Airlines

7.4

Good

274 reviews

Singapore Airlines

8.1

Very Good

1,347 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

7.3

Good

95 reviews

Singapore Airlines

8.1

Very Good

1,347 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

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 £689). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £1,232). 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
Shenzhen Airlines	Cheapest£379	Average£444	FlexibilityNo cancel fee	On-time63%	Search Shenzhen Airlines flights
Air China	Cheapest£407	Average£498	FlexibilityNo cancel fee	On-time67%	Search Air China flights
China Southern	Cheapest£429	Average£540	FlexibilityNo cancel fee	On-time69%	Search China Southern flights
Etihad Airways	Cheapest£512	Average£591	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
China Eastern	Cheapest£559	Average£642	FlexibilityNo cancel fee	On-time62%	Search China Eastern flights
Singapore Airlines	Cheapest£588	Average£713	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Malaysia Airlines	Cheapest£591	Average£703	FlexibilityNo cancel fee	On-time67%	Search Malaysia Airlines flights
Vietnam Airlines	Cheapest£626	Average£721	FlexibilityNo cancel fee	On-time81%	Search Vietnam Airlines flights
British Airways	Cheapest£641	Average£779	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Cathay Pacific	Cheapest£667	Average£788	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 £375

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 24/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Cambodia

Keep the following information in mind while searching for Heathrow to Cambodia flight deals. Data was last updated 18 August 2025.

Round-trip from

One-way 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 18 August 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 18 August 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 18 August 2025.

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.

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 18 August 2025.