Cheapest return GMP–BKK flights, May

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

Return flights

29 May - 03 Jun Air Busan
18 May - 21 May Air Busan
21 May - 26 May T'way Air
20 May - 24 May Jeju Air
17 May - 24 May Air Busan
16 May - 24 May Jeju Air
23 May - 24 May Jeju Air
17 May - 18 May Air Busan
17 May - 19 May Air Busan
16 May - 21 May Jeju Air
25 May - 02 Jun Air China
30 May - 02 Jun Air China
25 May - 03 Jun Air China
16 May - 17 May Jeju Air
25 May - 06 Jun Air China
20 May - 02 Jun EVA Air
29 May - 02 Jun EVA Air
29 May - 09 Jun EVA Air
13 May - 30 Jun EVA Air
15 May - 16 Jun EVA Air

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

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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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