Find flights
When to book
FAQs

Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £355

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
16 Oct — 23 Oct1
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 16 September 2025.

Round-trip from

£650

One-way from

£355
29/10-5/11
  • 29/10-5/11
  • 4 total stops
  • 72h 05m total
  • London to Krong Preah Sihanouk
Search Deals
1/10
  • 1/10
  • 2 total stops
  • 26h 40m 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 16 September 2025.

Wed 29/1013:55LHR - KOS
2 stops40h 10mMultiple Airlines
Wed 5/1113:35KOS - LHR
2 stops31h 55mMultiple Airlines
Deal found 14/9£650
Thu 30/1013:55LHR - KOS
2 stops38h 50mMultiple Airlines
Thu 6/1112:15KOS - LHR
2 stops33h 15mMultiple Airlines
Deal found 15/9£662

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 16 September 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

Wed 29/10

13:55-13:05

2 stops40h 10m

Krong Preah Sihanouk Sihanoukville

Wed 5/11

13:35-14:30

2 stops31h 55m

£650

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 30/10

13:55-11:45

2 stops38h 50m

Krong Preah Sihanouk Sihanoukville

Thu 6/11

12:15-14:30

2 stops33h 15m

£662

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 16/2

18:55-13:05

2 stops35h 10m

Krong Preah Sihanouk Sihanoukville

Sat 28/2

12:15-06:15

2 stops25h 00m

£745

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Wed 1/10

22:00-06:40

2 stops26h 40m

£355

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sat 4/10

22:05-12:50

2 stops32h 45m

£405

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Mon 29/9

22:10-12:50

3 stops32h 40m

£426

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 28/9

21:45-11:45

2 stops32h 00m

£439

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 30/9

22:15-11:45

3 stops31h 30m

£478

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 2/10

06:30-12:50

3 stops24h 20m

£489

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Fri 3/10

06:30-11:45

3 stops23h 15m

£496

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 11 results
1
2

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
London City to Phnom Penh flights
Luton to Phnom Penh flights
Stansted to Phnom Penh flights
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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.