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Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £473

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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
22 Apr — 29 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Krong Preah Sihanouk

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Krong Preah Sihanouk
Explore the most affordable flight options available from Heathrow to Krong Preah Sihanouk. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 March 2026.

Sat 31/1021:00
LHR
-
KOS
2 stops29h 35m
Multiple Airlines
Sat 14/1110:45
KOS
-
LHR
2 stops37h 45m
Multiple Airlines
Deal found 19/3£693
Thu 19/1121:00
LHR
-
KOS
2 stops29h 35m
Multiple Airlines
Mon 30/1110:45
KOS
-
LHR
2 stops37h 45m
Multiple Airlines
Deal found 22/3£705
Mon 4/509:30
LHR
-
KOS
2 stops20h 15m
Multiple Airlines
Mon 11/513:30
KOS
-
LHR
2 stops31h 35m
Multiple Airlines
Deal found 20/3£744
Fri 1/509:30
LHR
-
KOS
2 stops20h 15m
Multiple Airlines
Sat 16/512:15
KOS
-
LHR
2 stops24h 45m
Multiple Airlines
Deal found 18/3£806
Sun 3/509:30
LHR
-
KOS
2 stops21h 30m
Multiple Airlines
Sun 10/513:30
KOS
-
LHR
2 stops23h 30m
Multiple Airlines
Deal found 18/3£826
Sat 27/621:25
LHR
-
KOS
2 stops40h 15m
Multiple Airlines
Sat 11/709:50
KOS
-
LHR
2 stops40h 35m
Multiple Airlines
Deal found 18/3£857
Sun 15/1114:55
LHR
-
KOS
2 stops35h 40m
Multiple Airlines
Fri 4/1210:45
KOS
-
LHR
2 stops42h 55m
Multiple Airlines
Deal found 21/3£894

Find flight deals from Heathrow to Krong Preah Sihanouk

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Krong Preah Sihanouk (KOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 23 March 2026.

Round-trip from

£744

One-way from

£473
4/5-11/5
  • 4/5-11/5
  • 4 total stops
  • 51h 50m total
  • London to Krong Preah Sihanouk
Search Deals
1/7
  • 1/7
  • 3 total stops
  • 55h 40m total
  • London to Krong Preah Sihanouk
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Krong Preah Sihanouk 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 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Krong Preah Sihanouk that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 4/5

09:30-11:45

2 stops20h 15m

Krong Preah Sihanouk Sihanoukville

Mon 11/5

13:30-15:05

2 stops31h 35m

£744

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 3/5

09:30-13:00

2 stops21h 30m

Krong Preah Sihanouk Sihanoukville

Sun 10/5

13:30-07:00

2 stops23h 30m

£826

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 12/4

17:00-09:15

2 stops58h 15m

Krong Preah Sihanouk Sihanoukville

Sat 18/4

09:50-16:10

2 stops36h 20m

£968

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 27/4

18:55-09:15

2 stops32h 20m

Krong Preah Sihanouk Sihanoukville

Mon 18/5

13:10-17:50

2 stops34h 40m

£1,017

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 18/8

09:30-13:00

2 stops21h 30m

Krong Preah Sihanouk Sihanoukville

Thu 27/8

12:15-07:00

2 stops24h 45m

£1,148
Fastest return journey

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 27/6

11:00-13:00

1 stop20h 00m

Krong Preah Sihanouk Sihanoukville

Sat 11/7

12:15-05:55

1 stop23h 40m

£1,301
Cheapest one-way
Fastest single journey

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Wed 1/7

22:05-11:45

3 stops55h 40m

£473

Flights are sorted by cheapest return flights first.

Deals found on 20/3

Sorted by cheapest first

Best time to book a flight from Heathrow to Krong Preah Sihanouk

Have a flexible travel schedule? Discover the best time to fly to Krong Preah Sihanouk 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.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Krong Preah Sihanouk. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Krong Preah Sihanouk from London Heathrow?

    Located just 7.8 mi from the city center, Krong Preah Sihanouk Sihanoukville is the airport most travelers will use when flying to Krong Preah Sihanouk from London Heathrow. Booking flights from London Heathrow to Sihanoukville (KOS) should be relatively easy as there are 0 daily inbound flights from London Heathrow from 0 different airlines.

  • Can I find deals for flights from Heathrow to Krong Preah Sihanouk that include hotel bookings?

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

  • How can I find direct flights from Heathrow to Krong Preah Sihanouk?

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

  • Can I find deals for business class flights from Heathrow to Krong Preah Sihanouk?

    Yes. Cheapflights offers flight deals from Heathrow to Krong Preah Sihanouk by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Krong Preah Sihanouk?

Book flights to Krong Preah Sihanouk if you plan to visit one of these locations
Kampot

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Why should you use Cheapflights to find cheap flight tickets from Heathrow to Krong Preah Sihanouk?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Krong Preah Sihanouk by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Krong Preah Sihanouk with no change fees?

Yes, we can. To see specific flights from Heathrow to Krong Preah Sihanouk with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to Krong Preah Sihanouk become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Krong Preah Sihanouk flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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