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

Return flights

31 Aug - 19 Sep	Thai AirAsia	direct
31 Aug - 10 Sep	Thai AirAsia	direct
31 Aug - 05 Sep	Thai AirAsia	direct
31 Aug - 12 Sep	Thai AirAsia	direct
31 Aug - 21 Sep	Thai AirAsia	direct
31 Aug - 17 Sep	Thai AirAsia	direct
31 Aug - 14 Sep	Thai AirAsia	direct
31 Aug - 15 Sep	Thai AirAsia	direct
31 Aug - 08 Sep	Thai AirAsia	direct
31 Aug - 03 Sep	VietJet Air
29 Aug - 30 Aug	Thai AirAsia
31 Aug - 31 Aug	Thai AirAsia
30 Aug - 30 Aug	Thai AirAsia

Also check the deals for one-way flights from Hanoi 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 Hanoi to Chiang Mai in August from $176

Return flights