AirHint found the following cheapest return flights from Busan (PUS) to Chiang Mai (CNX) in August 2025 (see full year).

Return flights

28 Aug - 04 Sep	Vietnam Airlines
31 Aug - 11 Sep	Eastar Jet	direct
25 Aug - 01 Sep	VietJet Air
24 Aug - 05 Sep	VietJet Air
28 Aug - 11 Sep	Eastar Jet	direct
24 Aug - 11 Sep	Eastar Jet	direct
18 Aug - 28 Aug	VietJet Air
31 Aug - 05 Sep	VietJet Air
24 Aug - 04 Sep	VietJet Air
29 Aug - 03 Sep	HK Express
17 Aug - 28 Aug	VietJet Air
22 Aug - 26 Aug	VietJet Air
10 Aug - 18 Sep	VietJet Air
24 Aug - 28 Aug	Eastar Jet	direct
17 Aug - 24 Aug	VietJet Air
17 Aug - 25 Aug	VietJet Air
25 Aug - 28 Aug	VietJet Air
22 Aug - 27 Aug	VietJet Air
18 Aug - 22 Aug	VietJet Air
22 Aug - 29 Aug	VietJet Air

Also check the deals for one-way flights from Busan to Chiang Mai in August.

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 August from 183€

Return flights