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Cheap flights from Cambodia to London Heathrow Airport from £297

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
KTI — LHR
14 Aug — 21 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cambodia to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Cambodia to Heathrow
Explore the most affordable flight options available from Cambodia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 July 2026.

Fri 18/919:35
SAI
-
LHR
2 stops49h 35m
Finnair
Fri 2/1007:30
LHR
-
SAI
2 stops22h 45m
Finnair
Deal found 14/7£1,562
Fri 18/912:55
SAI
-
LHR
2 stops27h 20m
Multiple Airlines
Fri 2/1013:15
LHR
-
SAI
2 stops23h 40m
Multiple Airlines
Deal found 14/7£2,063
Fri 18/918:05
SAI
-
LHR
2 stops22h 25m
Vietnam Airlines
Fri 2/1008:55
LHR
-
SAI
3 stops25h 30m
Vietnam Airlines
Deal found 14/7£2,112

Find flight deals from Cambodia to Heathrow

Keep the following information in mind while searching for Cambodia to Heathrow flight deals. Data was last updated 15 July 2026.

Round-trip from

£1,562

One-way from

£297

Popular in

March

Cheapest in

December

Average price

£821
Finnair
  • Finnair
  • 18/9-2/10
  • 4 total stops
  • 72h 20m total
  • Cambodia to London
Search Deals
26/11
  • 26/11
  • 2 total stops
  • 30h 30m total
  • Cambodia to London
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£218 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (£68 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 Cambodia to Heathrow 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 15 July 2026.
Use the filters below to find and compare flights from Cambodia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Fri 18/9

19:35-15:10

2 stops49h 35m

London Heathrow

Fri 2/10

07:30-12:15

2 stops22h 45m

£1,562

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Fri 18/9

12:55-10:15

2 stops27h 20m

London Heathrow

Fri 2/10

13:15-18:55

2 stops23h 40m

£2,063
Fastest return journey

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Fri 18/9

18:05-10:30

2 stops22h 25m

London Heathrow

Fri 2/10

08:55-16:25

3 stops25h 30m

£2,112
Cheapest one-way

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Thu 26/11

19:05-18:35

2 stops30h 30m

£297
Fastest single journey

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Thu 26/11

09:50-19:35

1 stop16h 45m

£415

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sat 2/1

23:50-20:50

3 stops28h 00m

£613

Siem ReapLondon

SAI - LHR

SAILHR

Siem Reap–Angkor Intl

Sat 2/1

16:45-19:10

1 stop33h 25m

£1,080

Flights are sorted by cheapest return flights first.

Deals found on 13/7

Sorted by cheapest first

Best time to book a flight from Cambodia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Cambodia 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 Cambodia to London Heathrow Airport

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

Currently, June is the cheapest month in which you can book a flight from Cambodia to London Heathrow Airport (average of £346). Flying from Cambodia to London Heathrow Airport in January is currently the most expensive (average of £907). 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 15 July 2026.
Check out reviews from past customers who have flown with Etihad Airways from Cambodia to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Etihad Airways
7.3
Good
1,479 reviews
Check prices

Boarding

7.6

Food

7.1

Overall

7.3

Comfort

7.3

Crew

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

YYZ - AUH

Excellent customer service! This was my first time flying with Etihad Airways, and I had a wonderful experience. The staff were friendly, professional, and very helpful throughout my journey. If I travel again in the future, I will definitely choose Etihad Airways. Highly recommended
Etihad Airways
7.3
Good
1,479 reviews
Etihad Airways
7.3
Good
1,479 reviews
Check prices

Boarding

7.6

Food

7.1

Overall

7.3

Comfort

7.3

Crew

7.8

Entertainment

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

YYZ - AUH

Excellent customer service! This was my first time flying with Etihad Airways, and I had a wonderful experience. The staff were friendly, professional, and very helpful throughout my journey. If I travel again in the future, I will definitely choose Etihad Airways. Highly recommended

Related info for your journey

Find useful and relevant information for your journey from Cambodia to Heathrow. 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 Cambodia to London Heathrow Airport?

    There are many flights that can get you from Cambodia to London Heathrow Airport in 22h 25m. Fly via Finnair or Vietnam Airlines to get the fastest option. There are 6106 mi between Cambodia and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Cambodia to London Heathrow Airport one-way?

    The cheapet airlines for a one-way flight from Cambodia to London Heathrow Airport are Etihad Airways (£211), China Southern (£235), and Malaysia Airlines (£291).

  • Can I find deals for flights from Cambodia to Heathrow that include hotel bookings?

    Yes. In addition to deals on Cambodia to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Cambodia to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cambodia to Heathrow.

  • Can I find deals for business class flights from Cambodia to Heathrow?

    Yes. Cheapflights offers flight deals from Cambodia to Heathrow 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 Cambodia to London Heathrow Airport?

    Currently, June is the cheapest month in which you can book a flight from Cambodia to London Heathrow Airport (average of £346). Flying from Cambodia to London Heathrow Airport in January is currently the most expensive (average of £907). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Northampton
Watford
Eastbourne
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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.

Top airline flying from Cambodia to Heathrow

Discover the top airline that operate flights from Cambodia to Heathrow. 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 15 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£355Average£584FlexibilityNo cancel feeOn-time75%
Search Etihad 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 Cambodia to Heathrow?

Cheapflights makes it easy to find Cambodia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Cambodia to Heathrow?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Cambodia.

Can Cheapflights find flights from Cambodia to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Cambodia? 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 Cambodia to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Cambodia today and book when prices fit your budget.

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