AirHint found the following cheapest return flights from Ko Samui (USM) to London (LGW) in January 2026 (see full year).

Return flights

26 Jan - 23 Feb	Scoot
17 Jan - 24 Jan	Bangkok Airways
28 Jan - 10 Feb	Scoot
22 Jan - 25 Jan	Scoot
16 Jan - 23 Jan	Bangkok Airways
23 Jan - 25 Jan	Bangkok Airways
26 Jan - 09 Feb	Scoot
14 Jan - 28 Jan	Scoot

Also check the deals for one-way flights from Ko Samui to London in January.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Ko Samui to London in January from $917

Return flights