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

Return flights

11 Apr - 18 Apr	VietJet Air
17 Apr - 24 Apr	Thai VietJet Air
21 Apr - 26 Apr	Thai VietJet Air
15 Apr - 14 May	HK Express
10 Apr - 13 Apr	China Airlines
12 Apr - 16 Apr	China Airlines
11 Apr - 15 Apr	China Airlines
10 Apr - 15 Apr	China Airlines
14 Apr - 18 May	China Airlines
14 Apr - 17 May	HK Express
10 Apr - 14 Apr	China Airlines

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 333€

Return flights