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

One-Way flights

30 Sep	VietJet Air
25 Sep	HK Express
22 Sep	VietJet Air
18 Sep	Vietnam Airlines
17 Sep	Vietnam Airlines
16 Sep	VietJet Air
11 Sep	Vietnam Airlines
27 Sep	VietJet Air
21 Sep	VietJet Air
01 Sep	Air China

Also check the deals for return flights from Hanoi to Hahn 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 Hanoi to Hahn in September from 308€

One-Way flights