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

11 Apr - 15 Apr Vietnam Airlines
24 Apr - 28 Apr Vietnam Airlines
10 Apr - 16 Apr Vietnam Airlines
16 Apr - 23 Apr Vietnam Airlines
18 Apr - 25 Apr Vietnam Airlines
09 Apr - 23 Apr Vietnam Airlines
09 Apr - 15 Apr Vietnam Airlines
06 Apr - 16 Apr Vietnam Airlines
11 Apr - 17 Apr Vietnam Airlines
01 Apr - 18 Apr Vietnam Airlines
28 Apr - 04 May Singapore Airlines
26 Apr - 03 May Singapore Airlines
28 Apr - 05 May Singapore Airlines
30 Apr - 06 May Singapore Airlines
30 Apr - 05 May Singapore Airlines
30 Apr - 04 May Singapore Airlines
30 Apr - 03 May Singapore Airlines
28 Apr - 04 May Thai Airways direct
26 Apr - 03 May Thai Airways direct
28 Apr - 05 May Thai Airways 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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