฿26,426 Cheap Thai Airways International flights from London to Samui Intl. Airport (LHR→USM)

View ฿26,426 flight on Tue, 30 Sept 2025Opens in a new window

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Thai Airways International flights from London to Samui Intl. Airport (LHR→USM)

Prices were available within the past 7 days and start at ฿26,426 for one-way flights and ฿39,533 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thai Airways International
Thu, 12 Mar - Wed, 18 Mar
LHR
London
USM
Koh Samui
฿39,533 Return, found 4 days ago
฿39,533
Return
found 4 days ago
Select Thai Airways International flight, departing Thu, 12 Mar from London to Koh Samui, returning Wed, 18 Mar, priced at ฿39,533 found 4 days ago

Frequently asked questions

How much is a Thai Airways International flight from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
Apply the "Price (lowest to highest)" filter on Expedia to find cheap Thai Airways International round-trip flights from ฿39,533 from LHR to USM. Affordable one-way tickets from ฿26,426 are also on offer.**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 Thai Airways International?
Search for one-way or return flights to Koh Samui in October or September. You could find a cheap fare with Thai Airways International during these quieter months.
Does Thai Airways International fly nonstop from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
Fill in your dates, press search and select the "Nonstop" filter on Expedia to find any direct flights from LHR to USM with Thai Airways International or other carriers.
What airports does Thai Airways International fly into in Koh Samui?
Ko Samui Airport (USM) is the primary Koh Samui gateway for Thai Airways International flights from Heathrow Airport (LHR).
Can I change or cancel my Thai Airways International flight from Heathrow Airport (LHR) to Ko Samui Airport (USM)?
Depending on the type of ticket you purchased, a fee will generally apply if you change or cancel your flight more than 24 hours after it's confirmed. To find plane tickets with more flexibility, select our "Changes included" or "No cancel fee" filter when you search for flights. To learn more about cancelling or modifying your reservation, head to "Trips," select your flight and click on "Manage Booking."

Travel information

Travel information

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

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