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

Return flights

06 Mar - 10 Mar	Air China
04 Mar - 11 Mar	Air China
04 Mar - 07 Mar	Air China
11 Mar - 13 Mar	Air China
09 Mar - 12 Mar	Air China
09 Mar - 11 Mar	Air China
15 Mar - 20 Mar	Air China
15 Mar - 19 Mar	Air China
06 Mar - 12 Mar	Air China
06 Mar - 13 Mar	Air China
16 Mar - 06 Apr	Jeju Air
31 Mar - 09 Apr	Jeju Air
24 Mar - 09 Apr	Jeju Air
26 Mar - 26 Apr	Jeju Air
31 Mar - 03 Apr	Jeju Air
24 Mar - 03 Apr	Jeju Air
28 Mar - 03 Apr	Jeju Air
28 Mar - 02 Apr	Jeju Air
27 Mar - 03 Apr	Jeju Air
27 Mar - 02 Apr	Jeju Air

Also check the deals for one-way flights from Seoul to Bangkok in March.

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 March from 261€

Return flights