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Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £516

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 29/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
24 Aug — 31 Aug1
1 adult

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 19 August 2025.

Round-trip from

£615

One-way from

£516
3/9-8/9
  • 3/9-8/9
  • 4 total stops
  • 92h 50m total
  • London to Krong Preah Sihanouk
Search Deals
29/12
  • 29/12
  • 3 total stops
  • 36h 05m total
  • London to Krong Preah Sihanouk
Search Deals

Find flight deals from Heathrow to Krong Preah Sihanouk

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 19 August 2025.

Sun 9/1121:00LHR - KOS
2 stops29h 35mMultiple Airlines
Sun 23/1110:45KOS - LHR
2 stops37h 45mMultiple Airlines
Deal found 18/8£685
Thu 2/1014:45LHR - KOS
2 stops39h 00mMultiple Airlines
Thu 9/1012:15KOS - LHR
2 stops33h 00mMultiple Airlines
Deal found 18/8£695
Sun 14/915:05LHR - KOS
2 stops36h 10mMultiple Airlines
Sun 21/910:15KOS - LHR
2 stops26h 10mMultiple Airlines
Deal found 17/8£745
Wed 1/1021:05LHR - KOS
3 stops33h 45mMultiple Airlines
Wed 8/1013:20KOS - LHR
2 stops33h 20mMultiple Airlines
Deal found 17/8£771

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 19 August 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

Sun 9/11

21:00-09:35

2 stops29h 35m

Krong Preah Sihanouk Sihanoukville

Sun 23/11

10:45-17:30

2 stops37h 45m

£685

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 2/10

14:45-11:45

2 stops39h 00m

Krong Preah Sihanouk Sihanoukville

Thu 9/10

12:15-15:15

2 stops33h 00m

£695

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 14/9

15:05-09:15

2 stops36h 10m

Krong Preah Sihanouk Sihanoukville

Sun 21/9

10:15-06:25

2 stops26h 10m

£745

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Wed 1/10

21:05-12:50

3 stops33h 45m

Krong Preah Sihanouk Sihanoukville

Wed 8/10

13:20-16:40

2 stops33h 20m

£771

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 29/12

19:50-09:35

2 stops30h 45m

Krong Preah Sihanouk Sihanoukville

Sun 18/1

13:35-15:25

1 stop32h 50m

£911

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 29/12

18:00-13:05

3 stops36h 05m

£516

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 27/12

15:45-14:00

3 stops39h 15m

£582

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 28/12

21:10-09:35

2 stops29h 25m

£604

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 25/12

17:40-09:35

3 stops32h 55m

£627

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Fri 26/12

17:05-09:35

3 stops33h 30m

£627

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 12 results
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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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Alternative routes for Heathrow to Krong Preah Sihanouk

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Phnom Penh flights
Gatwick to Phnom Penh flights
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Gatwick to Krong Preah Sihanouk 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 Heathrow to Krong Preah Sihanouk?

Cheapflights helps you search for flights from Heathrow to Krong Preah Sihanouk via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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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