AirHint found the following cheapest return flights from Seoul (GMP) to Bangkok (BKK) in January 2026 (see full year).

Return flights

02 Jan - 07 Jan	EVA Air
10 Jan - 14 Jan	EVA Air
16 Jan - 21 Jan	EVA Air
14 Jan - 21 Jan	EVA Air
07 Jan - 14 Jan	EVA Air
26 Jan - 03 Feb	Air China
02 Jan - 05 Jan	Air China
06 Jan - 12 Jan	Air China
23 Jan - 27 Jan	Air China
24 Jan - 27 Jan	Air China
02 Jan - 27 Jan	Air China
20 Jan - 03 Feb	Air China
27 Jan - 10 Feb	Air China
30 Jan - 03 Feb	Air China
28 Jan - 07 Feb	Air China
27 Jan - 03 Feb	Air China
04 Jan - 03 Feb	Air China
31 Jan - 04 Feb	EVA Air
14 Jan - 11 Feb	EVA Air
31 Jan - 05 Feb	EVA Air

Also check the deals for one-way 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 return flights from Seoul to Bangkok in January from $501

Return flights