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

Return flights

02 Dec - 09 Dec	Air China
25 Dec - 28 Dec	Air China
18 Dec - 21 Dec	Air China
28 Dec - 08 Jan	Air China
24 Dec - 27 Dec	Air China
23 Dec - 27 Dec	Air China
25 Dec - 31 Dec	Air China
09 Dec - 02 Jan	Air China
24 Dec - 03 Jan	Air China
27 Dec - 01 Jan	Air China
25 Dec - 01 Jan	Air China
26 Dec - 02 Jan	Air China
26 Dec - 31 Dec	Air China
16 Dec - 23 Dec	EVA Air
05 Dec - 09 Dec	EVA Air
12 Dec - 23 Dec	EVA Air
24 Dec - 02 Jan	Air China
24 Dec - 01 Jan	Air China
28 Dec - 02 Jan	Air China
31 Dec - 07 Jan	Air China

Also check the deals for one-way flights from Seoul to Bangkok 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 return flights from Seoul to Bangkok in December from 453€

Return flights