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

One-Way flights

20 Apr	Thai AirAsia X	direct
26 Apr	Thai AirAsia X	direct
16 Apr	Thai AirAsia X	direct
19 Apr	Thai AirAsia X	direct
17 Apr	Thai AirAsia X	direct
21 Apr	Thai AirAsia X	direct
28 Apr	Thai AirAsia X	direct
25 Apr	Thai AirAsia X	direct
29 Apr	Thai AirAsia X	direct
23 Apr	Thai AirAsia X	direct

Also check the deals for return flights from Bangkok to Seoul in April.

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 one-way flights from Bangkok to Seoul in April from $94

One-Way flights