Distance From Samui Airport to London Heathrow Airport, USM - LHR Distance

The distance from Samui Airport (USM) to London Heathrow Airport (LHR) is 6149 miles or 9896 kilometers or 5340 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 Na Thon (Ko Samui Island) ( Thailand ) to London ( United Kingdom )?

A one-way nonstop (direct) flight between Na Thon (Ko Samui Island) and London takes around 14 hours 8 minutes.

Estimated flight time from Samui Airport, Na Thon (Ko Samui Island), Thailand to London Heathrow Airport, London, United Kingdom is 14 hours 8 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 • USM - LHR

Kilometers		9896 km
Statute Miles		6149 miles
Nautical Miles		5340 nm
Avg. Time of Flight		14 hours 8 minutes

Samui Airport to London Heathrow Airport Flight Route Map - USM to LHR Flight Path

Location of Samui Airport & London Heathrow Airport is given below.
Click the map to view Na Thon (Ko Samui Island) to London nonstop flight path and travel direction.

Click to see flight route on Google Map between Na Thon (Ko Samui Island), Thailand and London, United Kingdom. .

Nonstop flight route between Na Thon (Ko Samui Island), Thailand and London, United Kingdom.

Time Difference Between the Airports • USM - LHR

Time difference between Na Thon (Ko Samui Island) (Thailand) and London (United Kingdom) is 6 Hours.
London time is 6 Hours behind Na Thon (Ko Samui Island).

Location	Local Time
Na Thon (Ko Samui Island) (Thailand)	2026-09-15, 10:05:35 +07
London (United Kingdom)	2026-09-15, 04:05:35 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

Samui Airport (USM / VTSM) Na Thon (Ko Samui Island), Thailand

Destination

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