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Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £791

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheap 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 17 October 2025.

Round-trip from

£727
1/12-8/12
  • 1/12-8/12
  • 4 total stops
  • 60h 05m total
  • London to Krong Preah Sihanouk
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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 17 October 2025.

Tue 11/1106:20LHR - KOS
2 stops20h 15mVietnam Airlines
Thu 20/1110:45KOS - LHR
2 stops27h 30mVietnam Airlines
Deal found 15/10£791
Tue 11/1120:10LHR - KOS
2 stops40h 20mMultiple Airlines
Thu 20/1112:15KOS - LHR
3 stops36h 20mMultiple Airlines
Deal found 15/10£798
Sat 15/1122:00LHR - KOS
2 stops32h 05mMultiple Airlines
Fri 28/1113:35KOS - LHR
1 stop32h 50mMultiple Airlines
Deal found 16/10£894

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 17 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Krong Preah Sihanouk that are best for you.

Fly from

Heathrow

Fly to

Krong Preah Sihanouk

Route

Depart

Return

Price

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 11/11

06:20-09:35

2 stops20h 15m

Krong Preah Sihanouk Sihanoukville

Thu 20/11

10:45-07:15

2 stops27h 30m

£791

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 11/11

20:10-19:30

2 stops40h 20m

Krong Preah Sihanouk Sihanoukville

Thu 20/11

12:15-17:35

3 stops36h 20m

£798

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 7/3

06:00-13:05

3 stops24h 05m

Krong Preah Sihanouk Sihanoukville

Fri 20/3

17:40-18:35

3 stops31h 55m

£861

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 15/11

22:00-13:05

2 stops32h 05m

Krong Preah Sihanouk Sihanoukville

Fri 28/11

13:35-15:25

1 stop32h 50m

£894

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Wed 11/3

06:20-09:35

2 stops20h 15m

Krong Preah Sihanouk Sihanoukville

Sun 15/3

10:45-07:15

2 stops27h 30m

£948

Flights are sorted by cheapest return flights first.

Deals found on 15/10

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.

  • How long is the flight from London Heathrow Airport to Krong Preah Sihanouk?

    Airlines like Vietnam Airlines fly from London Heathrow Airport to Krong Preah Sihanouk in about 20h 15m. The time it takes to get you to your destination can typically vary by up to . There are 6236 mi between London Heathrow Airport and Krong Preah Sihanouk.

  • 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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Alternative routes for Heathrow to Krong Preah Sihanouk

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Heathrow to Krong Preah Sihanouk?

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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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