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

Return flights

02 Sep - 18 Sep	Qatar Airways
10 Sep - 24 Sep	Qatar Airways
02 Sep - 18 Sep	Etihad Airways	direct
10 Sep - 24 Sep	Etihad Airways	direct
24 Sep - 04 Oct	Etihad Airways	direct
27 Sep - 04 Oct	Qatar Airways
27 Sep - 04 Oct	Etihad Airways	direct
11 Sep - 15 Sep	IndiGo
05 Sep - 06 Sep	IndiGo
12 Sep - 15 Sep	IndiGo
01 Sep - 07 Sep	IndiGo

Also check the deals for one-way flights from Chicago to Abu Dhabi 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 Abu Dhabi in September from $800

Return flights