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Cheap flights from London Heathrow Airport to Cambodia from £354

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KTI
18 Feb — 25 Feb1
1 adult
1 adult, Economy, 0 bags

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 19 January 2026.

Round-trip from

£543

One-way from

£354

Popular in

July

Cheapest in

November

Average price

£599
SWISS
  • SWISS
  • 3/6-10/6
  • 4 total stops
  • 51h 10m total
  • London to Cambodia
Search Deals
23/2
  • 23/2
  • 3 total stops
  • 41h 35m 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 (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 19 January 2026.

Wed 3/613:50
LHR
-
SAI
2 stops22h 55m
SWISS
Wed 10/609:40
SAI
-
LHR
2 stops28h 15m
SWISS
Deal found 18/1£543
Mon 4/517:50
LHR
-
SAI
2 stops18h 55m
Lufthansa
Mon 11/510:30
SAI
-
LHR
2 stops27h 45m
Lufthansa
Deal found 17/1£563
Sun 1/321:25
LHR
-
SAI
1 stop29h 35m
Malaysia Airlines
Tue 24/311:00
SAI
-
LHR
1 stop35h 25m
Malaysia Airlines
Deal found 17/1£565
Mon 13/416:25
LHR
-
SAI
2 stops20h 20m
Lufthansa
Sun 26/416:00
SAI
-
LHR
2 stops22h 15m
Lufthansa
Deal found 17/1£581
Tue 10/312:05
LHR
-
SAI
2 stops23h 35m
SWISS
Tue 24/316:45
SAI
-
LHR
2 stops22h 20m
SWISS
Deal found 16/1£582
Tue 10/321:25
LHR
-
SAI
1 stop29h 35m
Multiple Airlines
Tue 24/322:00
SAI
-
LHR
2 stops26h 30m
Multiple Airlines
Deal found 16/1£596
Sun 22/221:25
LHR
-
SAI
1 stop29h 35m
Multiple Airlines
Sat 7/322:00
SAI
-
LHR
2 stops26h 30m
Multiple Airlines
Deal found 18/1£604
Sun 18/121:25
LHR
-
SAI
1 stop29h 35m
Malaysia Airlines
Tue 27/111:00
SAI
-
LHR
1 stop35h 25m
Malaysia Airlines
Deal found 17/1£621
Mon 2/219:20
LHR
-
SAI
2 stops30h 20m
Multiple Airlines
Mon 9/219:45
SAI
-
LHR
2 stops29h 25m
Multiple Airlines
Deal found 17/1£630
Mon 16/313:45
LHR
-
SAI
2 stops22h 00m
Multiple Airlines
Thu 26/322:00
SAI
-
LHR
2 stops50h 30m
Multiple Airlines
Deal found 17/1£643
Wed 18/320:55
LHR
-
SAI
2 stops30h 55m
Multiple Airlines
Thu 26/319:45
SAI
-
LHR
2 stops29h 25m
Multiple Airlines
Deal found 16/1£659
Wed 3/611:20
LHR
-
SAI
1 stop16h 20m
Singapore Airlines
Wed 10/610:30
SAI
-
LHR
1 stop35h 15m
Singapore Airlines
Deal found 18/1£660

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 19 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Cambodia that are best for you.

Fly from

Heathrow

Fly to

Cambodia

Route

Depart

Return

Price

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 3/6

13:50-18:45

2 stops22h 55m

Siem Reap–Angkor Intl

Wed 10/6

09:40-07:55

2 stops28h 15m

£543

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/3

12:05-18:40

2 stops23h 35m

Siem Reap–Angkor Intl

Tue 24/3

16:45-08:05

2 stops22h 20m

£582

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/3

21:25-10:00

1 stop29h 35m

Siem Reap–Angkor Intl

Tue 24/3

22:00-17:30

2 stops26h 30m

£596

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 22/2

21:25-10:00

1 stop29h 35m

Siem Reap–Angkor Intl

Sat 7/3

22:00-17:30

2 stops26h 30m

£604

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 18/3

20:55-10:50

2 stops30h 55m

Siem Reap–Angkor Intl

Thu 26/3

19:45-18:10

2 stops29h 25m

£659

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 3/6

11:20-09:40

1 stop16h 20m

Siem Reap–Angkor Intl

Wed 10/6

10:30-15:45

1 stop35h 15m

£660

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/3

21:00-21:00

3 stops41h 00m

Siem Reap–Angkor Intl

Tue 24/3

22:00-17:30

2 stops26h 30m

£670

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 1/3

21:00-21:00

3 stops41h 00m

Siem Reap–Angkor Intl

Tue 24/3

22:00-17:30

2 stops26h 30m

£671

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 3/2

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Tue 3/3

22:00-17:30

3 stops50h 30m

£697

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 2/3

08:50-11:45

2 stops19h 55m

Krong Preah Sihanouk Sihanoukville

Mon 9/3

13:35-06:40

2 stops24h 05m

£703

Flights are sorted by cheapest return flights first.

Deals found on 17/1

Showing 1-10 of 23 results
1
2
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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 £369). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £686). 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 19 January 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Cambodia, such as Singapore Airlines, Thai Airways, andEtihad Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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
8.1
Very Good
1,431 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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
7.8
Good
379 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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
1,373 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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
7.3
Good
133 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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
7.2
Good
138 reviews
Singapore Airlines
8.1
Very Good
1,431 reviews
Check prices

Overall

8.1

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Crew

8.6

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?

    SWISS can get you from London Heathrow Airport to Cambodia in just under 22h 55m. 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 £192 on Shenzhen Airlines. Other airlines that offer cheap prices include China Southern from £302 and Singapore Airlines from £314 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, November is the cheapest month in which you can book a flight from London Heathrow Airport to Cambodia (average of £369). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £686). 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 19 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£268Average£438FlexibilityNo cancel feeOn-time67%
Search Air China flights
China SouthernCheapest£397Average£541FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Shenzhen AirlinesCheapest£418Average£481FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Etihad AirwaysCheapest£517Average£636FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£541Average£692FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
China EasternCheapest£551Average£690FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Singapore AirlinesCheapest£586Average£756FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Malaysia AirlinesCheapest£590Average£771FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Vietnam AirlinesCheapest£618Average£719FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
British AirwaysCheapest£650Average£839FlexibilityNo cancel feeOn-time70%
Search British Airways 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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