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Cheap flights from London Heathrow Airport to Cambodia from £362

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 14/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KTI
22 Aug — 29 Aug1
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 23 July 2026.

Wed 9/917:50
LHR
-
SAI
2 stops19h 05m
Multiple Airlines
Wed 23/909:40
SAI
-
LHR
2 stops18h 05m
Multiple Airlines
Deal found 19/7£571
Tue 24/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Fri 4/1209:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 20/7£593
Tue 8/912:20
LHR
-
SAI
2 stops24h 35m
Multiple Airlines
Tue 22/909:40
SAI
-
LHR
2 stops18h 05m
Multiple Airlines
Deal found 19/7£597
Thu 10/912:10
LHR
-
SAI
2 stops24h 45m
SWISS
Wed 23/909:40
SAI
-
LHR
2 stops18h 05m
SWISS
Deal found 19/7£599
Sat 21/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Wed 2/1209:55
SAI
-
LHR
2 stops29h 10m
SWISS
Deal found 21/7£606
Sat 21/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Tue 1/1209:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 20/7£607
Tue 15/919:30
LHR
-
SAI
2 stops17h 25m
Multiple Airlines
Tue 29/909:40
SAI
-
LHR
2 stops18h 05m
Multiple Airlines
Deal found 22/7£610
Mon 14/908:40
LHR
-
SAI
2 stops28h 15m
SWISS
Tue 29/909:40
SAI
-
LHR
2 stops18h 05m
SWISS
Deal found 22/7£612
Sat 21/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Mon 30/1116:45
SAI
-
LHR
2 stops22h 20m
SWISS
Deal found 21/7£613
Mon 23/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Thu 3/1209:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 22/7£615
Mon 14/906:00
LHR
-
SAI
2 stops30h 55m
Multiple Airlines
Mon 28/909:40
SAI
-
LHR
2 stops38h 10m
Multiple Airlines
Deal found 22/7£623
Thu 3/906:15
LHR
-
KOS
3 stops24h 45m
Multiple Airlines
Thu 10/912:15
KOS
-
LHR
2 stops33h 55m
Multiple Airlines
Deal found 20/7£841

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 23 July 2026.

Round-trip from

£571

One-way from

£362

Popular in

July

Cheapest in

November

Average price

£932
SWISS
  • SWISS
  • 9/9-23/9
  • 4 total stops
  • 37h 10m total
  • London to Cambodia
Search Deals
14/9
  • 14/9
  • 3 total stops
  • 38h 20m total
  • London to Cambodia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£83 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 July 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 23 July 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

Wed 9/9

08:40-18:55

2 stops28h 15m

Siem Reap–Angkor Intl

Thu 24/9

09:40-07:55

2 stops28h 15m

£599
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 15/9

19:30-18:55

2 stops17h 25m

Siem Reap–Angkor Intl

Tue 29/9

09:40-21:45

2 stops18h 05m

£610

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 3/9

06:15-13:00

3 stops24h 45m

Krong Preah Sihanouk Sihanoukville

Thu 10/9

12:15-16:10

2 stops33h 55m

£841

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Thu 3/12

11:00-20:30

1 stop26h 30m

Siem Reap–Angkor Intl

Mon 14/12

21:30-07:15

1 stop16h 45m

£862

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 3/9

15:05-09:15

2 stops36h 10m

Krong Preah Sihanouk Sihanoukville

Wed 9/9

09:50-14:05

2 stops34h 15m

£865

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 14/9

09:25-09:40

1 stop18h 15m

Siem Reap–Angkor Intl

Sun 27/9

16:00-15:45

1 stop29h 45m

£867

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Wed 2/9

15:05-19:40

2 stops22h 35m

Krong Preah Sihanouk Sihanoukville

Wed 9/9

09:50-14:05

2 stops34h 15m

£915

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/11

11:00-17:40

1 stop23h 40m

Siem Reap–Angkor Intl

Sat 5/12

21:30-07:15

2 stops40h 45m

£1,005

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 30/9

18:55-17:10

1 stop16h 15m

Siem Reap–Angkor Intl

Wed 28/10

17:55-08:20

2 stops21h 25m

£1,034

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 24/11

08:50-09:15

2 stops17h 25m

Siem Reap–Angkor Intl

Mon 30/11

19:25-18:10

2 stops29h 45m

£1,057

Flights are sorted by cheapest return flights first.

Deals found on 20/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 £590). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £975). 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 15 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

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 23 July 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
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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
1,578 reviews
Singapore Airlines
8.2
Very Good
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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
411 reviews
Singapore Airlines
8.2
Very Good
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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
7.4
Good
164 reviews
Singapore Airlines
8.2
Very Good
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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
7.4
Good
156 reviews
Singapore Airlines
8.2
Very Good
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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
1,486 reviews
Singapore Airlines
8.2
Very Good
1,578 reviews
Check prices

Comfort

8.0

Boarding

8.3

Food

7.8

Entertainment

8.1

Crew

8.6

Overall

8.2

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

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, Vietnam Airlines, and Singapore Airlines can get you from London Heathrow Airport to Cambodia in just under 18h 15m. Your travel time can differ by up to 10h. 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 £242 on Etihad Airways. Other airlines that offer cheap prices include China Southern from £290 and Vietnam Airlines from £455 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 £590). Flying from London Heathrow Airport to Cambodia in July is currently the most expensive (average of £975). 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 23 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£269Average£391FlexibilityNo cancel feeOn-time67%
Search Air China flights
Shenzhen AirlinesCheapest£336Average£620FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest£472Average£538FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Etihad AirwaysCheapest£513Average£650FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£543Average£692FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
China EasternCheapest£581Average£662FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Malaysia AirlinesCheapest£591Average£787FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Singapore AirlinesCheapest£615Average£802FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Vietnam AirlinesCheapest£621Average£821FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Cathay PacificCheapest£710Average£859FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific 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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