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Cheap flights from Cambodia to London Heathrow Airport from £252

KTI — LHR
6 Oct — 13 Oct1
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

Tue 20/1019:20 -
2 stops29h 25m
Thu 7/119:20 -
2 stops32h 35m
Deal found 4/9£1,996
Mon 19/1019:35 -
2 stops31h 05m
Mon 11/116:15 -
2 stops34h 00m
Deal found 4/9£2,012
Thu 15/1015:10 -
2 stops27h 35m
Mon 11/120:55 -
2 stops31h 00m
Deal found 4/9£2,033
Thu 15/1015:10 -
2 stops27h 35m
Tue 5/119:20 -
2 stops32h 35m
Deal found 4/9£2,073
Mon 19/1019:35 -
2 stops31h 05m
Sat 9/107:30 -
2 stops18h 45m
Deal found 4/9£2,250
Wed 21/1019:35 -
2 stops49h 35m
Tue 5/107:30 -
2 stops22h 10m
Deal found 4/9£2,252
Sun 18/1012:55 -
2 stops25h 05m
Fri 8/109:25 -
2 stops20h 15m
Deal found 4/9£2,543
Sun 18/1019:35 -
2 stops49h 35m
Mon 11/116:15 -
2 stops37h 25m
Deal found 4/9£2,585
Sun 18/1012:55 -
2 stops25h 05m
Sun 10/108:35 -
2 stops27h 10m
Deal found 4/9£2,648
Sun 18/1012:55 -
2 stops31h 10m
Sat 9/120:10 -
2 stops39h 35m
Deal found 4/9£2,649
Sun 18/1019:35 -
2 stops31h 05m
Thu 7/110:20 -
2 stops19h 20m
Deal found 4/9£2,822
Thu 15/1019:35 -
2 stops43h 35m
Fri 8/110:20 -
2 stops39h 55m
Deal found 4/9£2,826

Find flight deals from Cambodia to Heathrow

Round-trip from

£1,996

One-way from

£252

Popular in

March

Cheapest in

December

Average price

£774
Etihad Airways
  • Etihad Airways
  • 20/10-7/1
  • 4 total stops
  • 62h 00m total
  • Cambodia to London
Search Deals
18/10-31/12
  • 18/10-31/12
  • 2 total stops
  • 30h 15m total
  • Cambodia to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£228 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 September 2026
Search Deals

Cheapflights Fare Finder

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

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Depart

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Price

Cheapest return flight

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 18/10

19:05-19:20

2 stops30h 15m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£252

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Wed 28/10

19:05-15:55

2 stops27h 50m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£284

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 18/10

18:05-17:05

1 stop29h 00m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£299
Fastest return journey

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Wed 28/10

21:30-07:15

1 stop16h 45m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£299

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 4/10

12:55-06:55

2 stops24h 00m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£302

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 20/9

12:55-15:20

2 stops32h 25m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£303

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sat 17/10

18:05-17:50

1 stop29h 45m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£311

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 28/2

13:20-16:10

2 stops33h 50m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£319

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Mon 1/3

13:20-13:50

2 stops31h 30m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£319

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Thu 4/3

23:50-20:00

2 stops51h 10m

London Heathrow

Wed 31/12

00:00-06:00

Nonstop0h 00m

£345

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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

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, July is the cheapest month in which you can book a flight from Cambodia to London Heathrow Airport (average of £573). Flying from Cambodia to London Heathrow Airport in January is currently the most expensive (average of £1,397). 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

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
1,533 reviews
Check prices

Boarding

7.6

Food

7.1

Comfort

7.3

Crew

7.8

Entertainment

7.2

Overall

7.3

Reviews

1 / 20
6.0
Good

Angelie,Jul 2026

MNL - AUH

The cabin crew were kind, helpful, and polite. However, my flight from Abu Dhabi to Frankfurt was delayed, causing me to miss my connecting flight. As a result, my journey was significantly extended, leading to a much longer travel time than originally scheduled. I didnt get a compensation like food and accommodation.
Etihad Airways
7.3
Good
1,533 reviews
Etihad Airways
7.3
Good
1,533 reviews
Check prices

Boarding

7.6

Food

7.1

Comfort

7.3

Crew

7.8

Entertainment

7.2

Overall

7.3

Reviews

1 / 20
6.0
Good

Angelie,Jul 2026

MNL - AUH

The cabin crew were kind, helpful, and polite. However, my flight from Abu Dhabi to Frankfurt was delayed, causing me to miss my connecting flight. As a result, my journey was significantly extended, leading to a much longer travel time than originally scheduled. I didnt get a compensation like food and accommodation.

Related info for your journey

  • 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 27h 45m. 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 China Southern (£201), Etihad Airways (£209), and Malaysia Airlines (£288).

  • 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, July is the cheapest month in which you can book a flight from Cambodia to London Heathrow Airport (average of £573). Flying from Cambodia to London Heathrow Airport in January is currently the most expensive (average of £1,397). 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
Hayes
Croydon
Northampton
Colchester
Eastbourne
Brentford
Barnet
Salisbury
Southall
Southend-on-Sea
Enfield
Kingston upon Thames
Watford

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Cambodia to Heathrow

AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£351Average£578FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights

Fly with Cheapflights

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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