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

Return flights

22 Sep - 29 Sep	VietJet Air	direct
22 Sep - 29 Sep	Peach
24 Sep - 01 Oct	Peach
11 Sep - 25 Sep	Peach
16 Sep - 19 Sep	Peach
11 Sep - 17 Sep	Peach
04 Sep - 11 Sep	Peach
06 Sep - 11 Sep	Peach
06 Sep - 09 Sep	Peach
04 Sep - 06 Sep	Peach
09 Sep - 11 Sep	Peach
02 Sep - 25 Oct	Peach
13 Sep - 04 Oct	Peach
29 Sep - 03 Oct	Peach
22 Sep - 18 Oct	Peach
29 Sep - 04 Oct	Peach
21 Sep - 05 Oct	Peach
27 Sep - 18 Oct	Thai AirAsia X
24 Sep - 13 Oct	Thai AirAsia X
27 Sep - 13 Oct	Thai AirAsia X

Also check the deals for one-way flights from Osaka 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 Osaka to Hanoi in September from 185€

Return flights