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

Return flights

17 Sep - 25 Sep	VietJet Air	direct
23 Sep - 23 Oct	VietJet Air
23 Sep - 27 Sep	VietJet Air
03 Sep - 24 Sep	VietJet Air
05 Sep - 09 Sep	VietJet Air	direct
26 Sep - 22 Oct	VietJet Air
22 Sep - 29 Sep	VietJet Air
30 Sep - 07 Oct	VietJet Air
03 Sep - 07 Sep	VietJet Air
22 Sep - 04 Oct	VietJet Air
21 Sep - 30 Sep	VietJet Air
18 Sep - 23 Sep	Akasa Air
18 Sep - 25 Sep	Akasa Air
08 Sep - 18 Sep	Akasa Air
28 Sep - 05 Oct	VietJet Air
24 Sep - 01 Oct	VietJet Air
24 Sep - 02 Oct	VietJet Air
26 Sep - 02 Oct	VietJet Air
22 Sep - 04 Oct	Vietnam Airlines	direct
17 Sep - 03 Oct	VietJet Air

Also check the deals for one-way flights from Delhi 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 Delhi to Hanoi in September from 140€

Return flights