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

Return flights

25 Apr - 28 Apr	Singapore Airlines
23 Apr - 27 Apr	Singapore Airlines
16 Apr - 19 Apr	HK Express
20 Apr - 23 Apr	HK Express
23 Apr - 25 Apr	HK Express
20 Apr - 24 Apr	HK Express
13 Apr - 17 Apr	China Airlines
03 Apr - 18 May	VietJet Air
01 Apr - 08 Apr	Air China
10 Apr - 23 Apr	VietJet Air
07 Apr - 11 Apr	Singapore Airlines

Also check the deals for one-way flights from Busan to Chiang Mai 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 Busan to Chiang Mai in April from $402

Return flights