AirHint found the following cheapest return flights from Chicago (ORD) to Hyderabad (HYD) in September 2025 (see full year).

Return flights

24 Sep - 22 Oct	Air India
22 Sep - 25 Oct	Air India
25 Sep - 18 Oct	Cathay Pacific
05 Sep - 24 Oct	Cathay Pacific
13 Sep - 04 Oct	Cathay Pacific
12 Sep - 10 Oct	Cathay Pacific
13 Sep - 26 Oct	Cathay Pacific
05 Sep - 21 Sep	Cathay Pacific
12 Sep - 20 Sep	Cathay Pacific
27 Sep - 11 Oct	Cathay Pacific
11 Sep - 26 Oct	Cathay Pacific
04 Sep - 22 Sep	Cathay Pacific
01 Sep - 30 Sep	Air India
25 Sep - 23 Oct	Cathay Pacific
23 Sep - 30 Sep	Air India
08 Sep - 22 Sep	Etihad Airways

Also check the deals for one-way flights from Chicago to Hyderabad 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 Chicago to Hyderabad in September from $656

Return flights