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

Return flights

04 Apr - 12 Apr	Vietnam Airlines
08 Apr - 13 Apr	Vietnam Airlines
19 Apr - 28 Apr	HK Express
19 Apr - 26 Apr	HK Express
10 Apr - 15 Apr	China Airlines
11 Apr - 15 Apr	China Airlines
06 Apr - 10 Apr	China Airlines
10 Apr - 13 Apr	China Airlines
10 Apr - 14 Apr	China Airlines
04 Apr - 08 Apr	China Airlines
29 Apr - 04 May	Singapore Airlines
30 Apr - 04 May	Singapore Airlines
29 Apr - 03 May	Thai VietJet Air

Also check the deals for one-way flights from Bangkok to Busan 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 return flights from Bangkok to Busan in April from $280

Return flights