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

Return flights

25 Sep - 26 Sep	Thai AirAsia
25 Sep - 01 Oct	Thai AirAsia
25 Sep - 02 Oct	Thai AirAsia
25 Sep - 03 Oct	Thai AirAsia
25 Sep - 04 Oct	Thai AirAsia
25 Sep - 10 Oct	Thai AirAsia
22 Sep - 01 Oct	Thai AirAsia
22 Sep - 26 Sep	Thai AirAsia
22 Sep - 02 Oct	Thai AirAsia
25 Sep - 11 Oct	Thai AirAsia
22 Sep - 25 Sep	Thai AirAsia
22 Sep - 03 Oct	Thai AirAsia
25 Sep - 08 Oct	Thai AirAsia
22 Sep - 23 Sep	Thai AirAsia
21 Sep - 26 Sep	Thai AirAsia
21 Sep - 25 Sep	Thai AirAsia
21 Sep - 23 Sep	Thai AirAsia
25 Sep - 25 Sep	AirAsia

Also check the deals for one-way flights from Kunming 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 return flights from Kunming to Hanoi in September from 239€

Return flights