Distance From Sihanoukville International Airport to London Heathrow Airport, KOS - LHR Distance

The distance from Sihanoukville International Airport (KOS) to London Heathrow Airport (LHR) is 6241 miles or 10043 kilometers or 5420 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Preah Sihanouk ( Cambodia ) to London ( United Kingdom )?

A one-way nonstop (direct) flight between Preah Sihanouk and London takes around 14 hours 20 minutes.

Estimated flight time from Sihanoukville International Airport, Preah Sihanouk, Cambodia to London Heathrow Airport, London, United Kingdom is 14 hours 20 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • KOS - LHR

Kilometers		10043 km
Statute Miles		6241 miles
Nautical Miles		5420 nm
Avg. Time of Flight		14 hours 20 minutes

Sihanoukville International Airport to London Heathrow Airport Flight Route Map - KOS to LHR Flight Path

Location of Sihanoukville International Airport & London Heathrow Airport is given below.
Click the map to view Preah Sihanouk to London nonstop flight path and travel direction.

Click to see flight route on Google Map between Preah Sihanouk, Cambodia and London, United Kingdom. .

Nonstop flight route between Preah Sihanouk, Cambodia and London, United Kingdom.

Time Difference Between the Airports • KOS - LHR

Time difference between Preah Sihanouk (Cambodia) and London (United Kingdom) is 6 Hours.
London time is 6 Hours behind Preah Sihanouk.

Location	Local Time
Preah Sihanouk (Cambodia)	2026-08-09, 07:58:09 +07
London (United Kingdom)	2026-08-09, 01:58:09 BST

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Sihanoukville International Airport (KOS / VDSV) Preah Sihanouk, Cambodia

Destination

London Heathrow Airport (LHR / EGLL) London, United Kingdom