Cheapest return flights from Hanoi to Chiang Mai in September from $146

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

Return flights

17 Sep - 24 Sep Thai AirAsia direct
05 Sep - 12 Sep Thai AirAsia
12 Sep - 19 Sep Thai AirAsia direct
15 Sep - 19 Sep Thai AirAsia direct
03 Sep - 19 Sep Thai AirAsia direct
03 Sep - 07 Sep Thai AirAsia direct
01 Sep - 19 Sep Thai AirAsia direct
01 Sep - 07 Sep Thai AirAsia direct
02 Sep - 09 Sep Thai AirAsia
03 Sep - 10 Sep Thai AirAsia
29 Sep - 19 Oct Thai AirAsia direct
28 Sep - 19 Oct Thai AirAsia direct
21 Sep - 08 Oct Thai AirAsia direct
19 Sep - 08 Oct Thai AirAsia direct
29 Sep - 08 Oct Thai AirAsia direct
28 Sep - 08 Oct Thai AirAsia direct
29 Sep - 03 Oct Thai AirAsia direct
12 Sep - 03 Oct Thai AirAsia direct
12 Sep - 01 Oct Thai AirAsia direct
21 Sep - 03 Oct Thai AirAsia direct

Also check the deals for one-way flights from Hanoi to Chiang Mai in September.

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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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