AirHint found the following cheapest one-way flights from Ko Samui (USM) to Seoul (ICN) in December 2025 (see full year).
One-Way flights
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Also check the deals for return flights from Ko Samui to Seoul in December.
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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