AirHint found the following cheapest one-way flights from Bangkok (DMK) to Seoul (ICN) in December 2025 (see full year).

One-Way flights

16 Dec	Thai AirAsia X	direct
16 Dec	Thai AirAsia
11 Dec	Thai AirAsia X	direct
22 Dec	Thai AirAsia X	direct
15 Dec	Thai AirAsia X	direct
01 Dec	Thai AirAsia X	direct
10 Dec	Thai AirAsia X	direct
17 Dec	Thai AirAsia X	direct
08 Dec	Thai AirAsia X	direct
07 Dec	Thai AirAsia X	direct

Also check the deals for return flights from Bangkok 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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Cheapest one-way flights from Bangkok to Seoul in December from 100€

One-Way flights