Cheapest return flights from Seoul to Bangkok in May from $149

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

Return flights

18 May - 20 May Vietnam Airlines
23 May - 27 May Vietnam Airlines
08 May - 12 May Vietnam Airlines
18 May - 25 May Vietnam Airlines
12 May - 15 May Vietnam Airlines
14 May - 17 May Vietnam Airlines
12 May - 16 May Vietnam Airlines
29 May - 03 Jun Vietnam Airlines
09 May - 16 May Vietnam Airlines
19 May - 22 May Vietnam Airlines
08 May - 11 May Vietnam Airlines
25 May - 04 Jun T'way Air direct
30 May - 04 Jun T'way Air direct
26 May - 05 Jun T'way Air direct
25 May - 05 Jun T'way Air direct
31 May - 05 Jun T'way Air direct
12 May - 15 Jun Vietnam Airlines
31 May - 09 Jun Vietnam Airlines
28 May - 03 Jun Vietnam Airlines
14 May - 11 Jun Vietnam Airlines

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

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