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Cheap flights from London Heathrow Airport to Krong Preah Sihanouk from £722

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — KOS
3 Jan — 10 Jan1
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.

Best flights from Heathrow to Krong Preah Sihanouk
Discover carefully curated flight deals from Heathrow to Krong Preah Sihanouk that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 4 December 2025.

Fri 16/111:00LHR - KOS
2 stops39h 35mVietnam Airlines
Fri 23/107:00KOS - LHR
1 stop31h 15mVietnam Airlines
Deal found 2/12£722
Fri 16/108:50LHR - KOS
2 stops19h 55mMultiple Airlines
Fri 23/113:35KOS - LHR
2 stops24h 05mMultiple Airlines
Deal found 2/12£729
Sun 18/108:50LHR - KOS
2 stops21h 15mMultiple Airlines
Sun 25/113:35KOS - LHR
2 stops31h 55mMultiple Airlines
Deal found 3/12£754
Thu 22/117:45LHR - KOS
2 stops32h 50mVietnam Airlines
Mon 26/116:30KOS - LHR
1 stop21h 45mVietnam Airlines
Deal found 1/12£1,086

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 4 December 2025.

Round-trip from

£722
Vietnam Airlines
  • Vietnam Airlines
  • 16/1-23/1
  • 3 total stops
  • 70h 50m total
  • London to Krong Preah Sihanouk
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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 4 December 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

Fri 16/1

11:00-09:35

2 stops39h 35m

Krong Preah Sihanouk Sihanoukville

Fri 23/1

07:00-07:15

1 stop31h 15m

£722

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Fri 16/1

08:50-11:45

2 stops19h 55m

Krong Preah Sihanouk Sihanoukville

Fri 23/1

13:35-06:40

2 stops24h 05m

£729

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Sun 18/1

08:50-13:05

2 stops21h 15m

Krong Preah Sihanouk Sihanoukville

Sun 25/1

13:35-14:30

2 stops31h 55m

£754

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Thu 22/1

17:45-09:35

2 stops32h 50m

Krong Preah Sihanouk Sihanoukville

Mon 26/1

16:30-07:15

1 stop21h 45m

£1,086

Flights are sorted by cheapest return flights first.

Deals found on 2/12

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 39h 35m. 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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Gatwick to Krong Preah Sihanouk flights

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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?

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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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