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฿35,865 Cheap KLM flights from London to Samui Intl. Airport (LHR→USM)

View ฿35,865 flight on Sun, 20 Sept 2026Opens in a new window

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KLM flights from London to Samui Intl. Airport (LHR→USM)

Prices were available within the past 7 days and start at ฿35,865 for one-way flights and ฿34,990 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, 8 Sept - Tue, 22 Sept
LHR
London
USM
Koh Samui
฿34,990 Return, found 23 hours ago
฿34,990
Return
found 23 hours ago
Select KLM flight, departing Tue, 8 Sept from London to Koh Samui, returning Tue, 22 Sept, priced at ฿34,990 found 23 hours ago
KLM
Tue, 8 Sept - Tue, 22 Sept
LHR
London
USM
Koh Samui
฿37,340 Return, found 23 hours ago
฿37,340
Return
found 23 hours ago
Select KLM flight, departing Tue, 8 Sept from London to Koh Samui, returning Tue, 22 Sept, priced at ฿37,340 found 23 hours ago
KLM
Tue, 8 Sept - Tue, 22 Sept
LHR
London
USM
Koh Samui
฿37,730 Return, found 23 hours ago
฿37,730
Return
found 23 hours ago
Select KLM flight, departing Tue, 8 Sept from London to Koh Samui, returning Tue, 22 Sept, priced at ฿37,730 found 23 hours ago
KLM
Mon, 4 Jan - Mon, 18 Jan
LHR
London
USM
Koh Samui
฿42,855 Return, found 1 hour ago
฿42,855
Return
found 1 hour ago
Select KLM flight, departing Mon, 4 Jan from London to Koh Samui, returning Mon, 18 Jan, priced at ฿42,855 found 1 hour ago

Frequently asked questions

How much is a KLM flight from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
Apply the "Price (lowest to highest)" filter on Expedia to search for cheap KLM return flights from ฿34,990 from LHR to USM. Affordable one-way fares from ฿35,865 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from LHR to USM with KLM?
October is one of the cheapest months to jet off to Koh Samui with KLM. You could also find fantastic deals on one-way and return fares in September.
Does KLM fly nonstop from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
To find out if there's a direct route from LHR to USM with KLM or any other carriers, check the "Nonstop" box when searching for flights.
What airports does KLM fly into in Koh Samui?
Take a KLM flight from Heathrow Airport (LHR) to Koh Samui, and you'll most likely touch down at Ko Samui Airport (USM). This is the airline's primary hub here.
Can I change or cancel my KLM flight from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
Changes are typically free within 24 hours of booking, but your airline may add a charge after that. For more details about modifying your reservation, check out your "Trips," select your flight and click on "Manage Booking." If you want the freedom to make changes without additional costs, check the "Changes included" or "No cancel fee" filter when planning your next escape.

Travel information

Origin airport
Heathrow
Destination airport
Samui Intl. Airport
Airlines serving
Air France, Austrian Airlines, British Airways, Cathay Pacific, EVA Airways, Etihad Airways, KLM, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International, Turkish Airlines
Popular airline
Cathay Pacific
Distance
9836 km
*Available to Expedia members.