Cheapest return flights from Seoul to Bangkok in April from $143

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

Return flights

08 Apr - 22 Apr Vietnam Airlines
25 Apr - 06 May Vietnam Airlines
26 Apr - 06 May Vietnam Airlines
26 Apr - 27 Apr Thai AirAsia X direct
25 Apr - 26 Apr Thai AirAsia X direct
25 Apr - 27 Apr Thai AirAsia X direct
21 Apr - 25 Apr Thai AirAsia X direct
21 Apr - 26 Apr Thai AirAsia X direct
21 Apr - 27 Apr Thai AirAsia X direct
23 Apr - 25 Apr Thai AirAsia X direct
23 Apr - 26 Apr Thai AirAsia X direct
23 Apr - 27 Apr Thai AirAsia X direct
26 Apr - 12 May Thai AirAsia X direct
26 Apr - 17 May Thai AirAsia X direct
25 Apr - 12 May Thai AirAsia X direct
21 Apr - 12 May Thai AirAsia X direct
23 Apr - 12 May Thai AirAsia X direct
29 Apr - 19 May Thai AirAsia X direct
29 Apr - 12 May Thai AirAsia X direct
29 Apr - 20 May Thai AirAsia X direct

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

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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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