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

Return flights

25 Sep - 29 Sep	VietJet Air
18 Sep - 21 Sep	VietJet Air
03 Sep - 07 Sep	VietJet Air
03 Sep - 10 Sep	VietJet Air
18 Sep - 22 Sep	VietJet Air
12 Sep - 19 Sep	VietJet Air
01 Sep - 05 Sep	VietJet Air
14 Sep - 21 Sep	VietJet Air
24 Sep - 01 Oct	VietJet Air
12 Sep - 20 Sep	VietJet Air
03 Sep - 22 Sep	Thai AirAsia
17 Sep - 06 Oct	Thai AirAsia
19 Sep - 06 Oct	Thai AirAsia
19 Sep - 08 Oct	Thai AirAsia
17 Sep - 01 Oct	Thai AirAsia
19 Sep - 01 Oct	Thai AirAsia
24 Sep - 06 Oct	Thai AirAsia
26 Sep - 06 Oct	Thai AirAsia
24 Sep - 12 Oct	Thai AirAsia
26 Sep - 12 Oct	Thai AirAsia

Also check the deals for one-way flights from Hanoi to Delhi 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 Hanoi to Delhi in September from $194

Return flights