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

One-Way flights

24 Sep	Thai AirAsia	direct
29 Sep	Thai AirAsia	direct
08 Sep	Thai AirAsia	direct
14 Sep	Thai AirAsia	direct
15 Sep	Thai AirAsia	direct
10 Sep	Thai AirAsia	direct
28 Sep	Thai AirAsia	direct
21 Sep	Thai AirAsia	direct
17 Sep	Thai AirAsia	direct
06 Sep	Thai Lion Air

Also check the deals for return flights from Chiang Mai to Hanoi in September.

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 one-way flights from Chiang Mai to Hanoi in September from 63€

One-Way flights