AirHint found the following cheapest one-way flights from Seoul (ICN) to Bangkok (BKK) in January 2026 (see full year).

One-Way flights

27 Jan	Thai AirAsia X	direct
28 Jan	Thai AirAsia X	direct
26 Jan	Thai AirAsia X	direct
30 Jan	Thai AirAsia X	direct
20 Jan	Thai AirAsia X	direct
17 Jan	Thai AirAsia X	direct
21 Jan	Thai AirAsia X	direct
31 Jan	Thai AirAsia X	direct
24 Jan	Thai AirAsia X	direct
25 Jan	Thai AirAsia X	direct

Also check the deals for return flights from Seoul to Bangkok 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 one-way flights from Seoul to Bangkok in January from 68€

One-Way flights