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

Return flights

23 Sep - 07 Oct	Air India
22 Sep - 07 Oct	Air India
23 Sep - 05 Oct	Air India
18 Sep - 24 Sep	Air India
18 Sep - 07 Oct	Air India
08 Sep - 22 Sep	Air India
18 Sep - 05 Oct	Air India
08 Sep - 15 Oct	Air India
16 Sep - 25 Sep	Air India
18 Sep - 08 Oct	Air India
18 Sep - 25 Sep	Air India
09 Sep - 22 Sep	Air India
15 Sep - 22 Sep	Air India
22 Sep - 29 Sep	Air India
22 Sep - 30 Sep	Air India
11 Sep - 18 Sep	Air India
18 Sep - 09 Oct	Air India
18 Sep - 16 Oct	Air India
08 Sep - 19 Sep	Air India
18 Sep - 10 Oct	Air India

Also check the deals for one-way flights from New York 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 New York to Delhi in September from $504

Return flights