AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (SAW) in August 2025 (see full year).

Return flights

14 Aug - 18 Aug	SWISS
27 Aug - 07 Sep	Icelandair
21 Aug - 26 Aug	Icelandair
11 Aug - 19 Aug	Air Canada
29 Aug - 07 Sep	Icelandair
28 Aug - 01 Sep	Icelandair
11 Aug - 21 Aug	Icelandair
21 Aug - 28 Aug	Icelandair
04 Aug - 20 Aug	Lufthansa
02 Aug - 16 Aug	LOT
11 Aug - 30 Aug	Icelandair
01 Aug - 15 Aug	Spirit Airlines
01 Aug - 31 Aug	Icelandair
27 Aug - 12 Sep	SWISS
22 Aug - 12 Sep	Icelandair
30 Aug - 13 Sep	Qatar Airways
08 Aug - 12 Sep	Qatar Airways

Also check the deals for one-way flights from Chicago to Istanbul in August.

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 Istanbul in August from $769

Return flights