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Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £371

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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
21 Feb — 28 Feb1
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 22 January 2026.

Mon 19/1021:20
LHR
-
KOS
2 stops29h 55m
Multiple Airlines
Sat 7/1110:45
KOS
-
LHR
2 stops37h 45m
Multiple Airlines
Deal found 21/1£643
Thu 19/1121:00
LHR
-
KOS
2 stops29h 35m
Multiple Airlines
Mon 7/1210:45
KOS
-
LHR
2 stops37h 45m
Multiple Airlines
Deal found 21/1£693
Sat 7/306:35
LHR
-
KOS
2 stops23h 30m
Multiple Airlines
Sat 14/312:15
KOS
-
LHR
2 stops34h 55m
Multiple Airlines
Deal found 21/1£794
Thu 29/110:25
LHR
-
KOS
1 stop19h 40m
Multiple Airlines
Fri 27/213:35
KOS
-
LHR
2 stops33h 35m
Multiple Airlines
Deal found 20/1£812
Sun 25/108:40
LHR
-
KOS
2 stops21h 25m
Multiple Airlines
Sun 8/213:35
KOS
-
LHR
2 stops23h 50m
Multiple Airlines
Deal found 20/1£823
Tue 17/206:00
LHR
-
KOS
3 stops24h 05m
Multiple Airlines
Tue 24/217:40
KOS
-
LHR
3 stops30h 50m
Multiple Airlines
Deal found 20/1£838

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 22 January 2026.

Round-trip from

£794

One-way from

£371
7/3-14/3
  • 7/3-14/3
  • 4 total stops
  • 58h 25m total
  • London to Krong Preah Sihanouk
Search Deals
7/3
  • 7/3
  • 3 total stops
  • 44h 20m 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 22 January 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

Heathrow

Fly to

Krong Preah Sihanouk

Route

Depart

Return

Price

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 7/3

06:35-13:05

2 stops23h 30m

Krong Preah Sihanouk Sihanoukville

Sat 14/3

12:15-16:10

2 stops34h 55m

£794

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 17/2

06:00-13:05

3 stops24h 05m

Krong Preah Sihanouk Sihanoukville

Tue 24/2

17:40-17:30

3 stops30h 50m

£838

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Fri 20/2

10:25-11:45

1 stop18h 20m

Krong Preah Sihanouk Sihanoukville

Fri 27/2

13:35-13:50

2 stops31h 15m

£878

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 12/2

06:35-13:05

2 stops23h 30m

Krong Preah Sihanouk Sihanoukville

Sun 22/2

13:35-17:45

2 stops35h 10m

£1,093

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 7/3

09:45-13:05

3 stops44h 20m

£371

Flights are sorted by cheapest return flights first.

Deals found on 21/1

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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