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

Return flights

04 Sep - 08 Sep	Air China
20 Sep - 24 Sep	Air China
22 Sep - 02 Oct	VietJet Air	direct
24 Sep - 24 Sep	VietJet Air
25 Sep - 30 Sep	Peach
24 Sep - 30 Sep	Peach
09 Sep - 11 Sep	Peach
06 Sep - 09 Sep	Peach
04 Sep - 08 Sep	VietJet Air	direct
18 Sep - 22 Sep	Peach
01 Sep - 09 Sep	Peach
24 Sep - 01 Oct	Peach
07 Sep - 07 Oct	Peach
27 Sep - 03 Oct	Peach
29 Sep - 02 Oct	Peach
29 Sep - 06 Oct	Peach
29 Sep - 12 Oct	Peach
30 Sep - 30 Oct	VietJet Air
21 Sep - 04 Oct	Peach
19 Sep - 06 Oct	Peach

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 $227

Return flights