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Cheap flights from London Heathrow Airport to Cambodia from £371

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KTI
24 May — 31 May1
1 adult
1 adult, Economy, 0 bags

Cheap 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 24 April 2026.

Tue 10/1121:00
LHR
-
SAI
3 stops41h 00m
China Eastern
Thu 3/1222:00
SAI
-
LHR
3 stops50h 30m
China Eastern
Deal found 20/4£646
Tue 10/1121:00
LHR
-
SAI
3 stops41h 00m
China Eastern
Sat 5/1222:00
SAI
-
LHR
2 stops50h 30m
China Eastern
Deal found 20/4£695
Sat 6/610:00
LHR
-
SAI
2 stops27h 05m
Multiple Airlines
Sat 13/609:40
SAI
-
LHR
2 stops27h 50m
Multiple Airlines
Deal found 22/4£704
Tue 26/517:50
LHR
-
SAI
2 stops19h 15m
Lufthansa
Tue 16/610:30
SAI
-
LHR
2 stops27h 45m
Lufthansa
Deal found 20/4£708
Tue 9/613:50
LHR
-
SAI
2 stops23h 15m
SWISS
Wed 17/609:40
SAI
-
LHR
2 stops28h 15m
SWISS
Deal found 21/4£717
Mon 11/514:20
LHR
-
SAI
3 stops25h 10m
Multiple Airlines
Sun 17/510:00
SAI
-
LHR
2 stops35h 05m
Multiple Airlines
Deal found 19/4£731
Mon 4/510:00
LHR
-
SAI
2 stops29h 30m
Multiple Airlines
Mon 18/515:35
SAI
-
LHR
2 stops29h 30m
Multiple Airlines
Deal found 20/4£733
Tue 26/509:30
LHR
-
SAI
2 stops24h 40m
Multiple Airlines
Tue 16/611:55
SAI
-
LHR
3 stops33h 10m
Multiple Airlines
Deal found 21/4£735
Wed 20/509:30
LHR
-
KOS
2 stops20h 15m
Multiple Airlines
Wed 27/513:30
KOS
-
LHR
2 stops30h 35m
Multiple Airlines
Deal found 20/4£820
Wed 3/608:25
LHR
-
KOS
2 stops29h 15m
Multiple Airlines
Wed 10/609:50
KOS
-
LHR
2 stops34h 15m
Multiple Airlines
Deal found 19/4£832
Sat 23/509:30
LHR
-
KOS
2 stops21h 30m
Multiple Airlines
Sat 30/512:15
KOS
-
LHR
2 stops35h 45m
Multiple Airlines
Deal found 23/4£882
Sat 6/619:25
LHR
-
KOS
2 stops42h 15m
Multiple Airlines
Sat 13/609:50
KOS
-
LHR
2 stops26h 35m
Multiple Airlines
Deal found 22/4£884

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 24 April 2026.

Round-trip from

£704

One-way from

£371

Popular in

July

Cheapest in

November

Average price

£695
6/6-13/6
  • 6/6-13/6
  • 4 total stops
  • 54h 55m total
  • London to Cambodia
Search Deals
30/4
  • 30/4
  • 2 total stops
  • 31h 00m total
  • London to Cambodia
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£81 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 April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Cambodia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 April 2026.
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 - SAI

LHRSAI

London Heathrow

Thu 7/5

20:40-21:30

2 stops42h 50m

Siem Reap–Angkor Intl

Tue 2/6

23:50-20:15

2 stops26h 25m

£751

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 5/5

22:15-21:30

2 stops41h 15m

Siem Reap–Angkor Intl

Tue 2/6

23:50-18:40

2 stops24h 50m

£751

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 27/5

16:50-21:30

2 stops22h 40m

Siem Reap–Angkor Intl

Tue 9/6

23:50-18:40

2 stops24h 50m

£751

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 25/5

16:50-21:30

2 stops22h 40m

Siem Reap–Angkor Intl

Thu 28/5

23:50-20:15

2 stops26h 25m

£781

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 5/5

22:15-21:30

2 stops41h 15m

Siem Reap–Angkor Intl

Sat 6/6

23:50-18:40

2 stops24h 50m

£781

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 4/5

09:05-21:30

2 stops30h 25m

Siem Reap–Angkor Intl

Mon 1/6

13:05-12:25

2 stops29h 20m

£784

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Fri 25/9

09:05-21:30

2 stops30h 25m

Siem Reap–Angkor Intl

Tue 29/9

23:50-20:15

2 stops26h 25m

£803

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sat 23/5

09:05-12:20

2 stops21h 15m

Siem Reap–Angkor Intl

Tue 2/6

23:50-18:40

2 stops24h 50m

£804

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 5/5

09:05-12:20

2 stops21h 15m

Siem Reap–Angkor Intl

Tue 26/5

23:50-20:15

2 stops26h 25m

£816

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 11/5

14:25-21:30

2 stops25h 05m

Siem Reap–Angkor Intl

Sun 17/5

13:05-14:25

2 stops31h 20m

£830

Flights are sorted by cheapest return flights first.

Deals found on 19/4

Showing 1-10 of 32 resultsSorted by cheapest first
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3
4

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

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.

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

Currently, October is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £360). Flying from London Heathrow Airport to Cambodia in November is currently the most expensive (average of £1,031). 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.

Reviews of airlines servicing Cambodia

Get insights into the airlines that provide service to Cambodia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cambodia. Reviews last updated 24 April 2026.
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
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Singapore Airlines
8.2
Very Good
1,502 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Thai Airways
7.9
Good
401 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
China Southern
7.4
Good
149 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Etihad Airways
7.3
Good
1,434 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.
Air China
7.3
Good
148 reviews
Singapore Airlines
8.2
Very Good
1,502 reviews
Check prices

Entertainment

8.0

Food

7.8

Crew

8.6

Boarding

8.3

Comfort

8.0

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Wee Keng,Dec 2025

HKG - SIN

Quick 3 hour flight with excellent service from the crew despite it being Christmas Day holiday. Ground crew passed out Xmas cookies as well. Great experience.

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?

    Emirates and Vietnam Airlines can get you from London Heathrow Airport to Cambodia in just under 31h 25m. Your travel time can differ by up to 11h 25m. The distance from London Heathrow Airport to Cambodia is about 6236 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 £239 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £287 and Malaysia Airlines from £363 one-way.

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

    Most travelers choose London Heathrow - Siem Reap–Angkor Intl, London Heathrow - Krong Preah Sihanouk Sihanoukville or London Heathrow - Phnom Penh Pochentong 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, October is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £360). Flying from London Heathrow Airport to Cambodia in November is currently the most expensive (average of £1,031). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Heathrow to Cambodia

Discover the top 10 airlines that operate flights from Heathrow to Cambodia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 24 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£266Average£441FlexibilityNo cancel feeOn-time67%
Search Air China flights
Etihad AirwaysCheapest£372Average£612FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
China SouthernCheapest£391Average£531FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Shenzhen AirlinesCheapest£413Average£496FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Austrian AirlinesCheapest£537Average£685FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
China EasternCheapest£547Average£616FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Malaysia AirlinesCheapest£585Average£716FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£591Average£757FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
LufthansaCheapest£596Average£765FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Vietnam AirlinesCheapest£617Average£802FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights

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?

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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