Flights to Koh Samui from Gatwick

View ฿19,760 flight on Thu, 20 Nov 2025Opens in a new window

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Cheap Flights from Gatwick (LON) to Koh Samui (USM)

Prices were available within the past 7 days and start at ฿19,760 for one-way flights and ฿29,255 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,255 Return, found 1 day ago
฿29,255
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,255 found 1 day ago
Swiss International Air Lines
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,365 Return, found 1 day ago
฿29,365
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,365 found 1 day ago
Austrian Airlines
Tue, 9 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,535 Return, found 1 day ago
฿29,535
Return
found 1 day ago
Select Austrian Airlines flight, departing Tue, 9 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,535 found 1 day ago
Lufthansa
Tue, 16 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿29,820 Return, found 1 day ago
฿29,820
Return
found 1 day ago
Select Lufthansa flight, departing Tue, 16 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿29,820 found 1 day ago
Gulf Air
Wed, 3 Sep - Tue, 23 Sep
LGW
London
USM
Koh Samui
฿32,040 Return, found 3 days ago
฿32,040
Return
found 3 days ago
Select Gulf Air flight, departing Wed, 3 Sep from London to Koh Samui, returning Tue, 23 Sep, priced at ฿32,040 found 3 days ago
KLM
Tue, 9 Sep - Mon, 17 Nov
LHR
London
USM
Koh Samui
฿32,970 Return, found 1 day ago
฿32,970
Return
found 1 day ago
Select KLM flight, departing Tue, 9 Sep from London to Koh Samui, returning Mon, 17 Nov, priced at ฿32,970 found 1 day ago
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