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

Return flights

12 Aug - 26 Aug	SWISS
12 Aug - 26 Aug	SWISS	direct
19 Aug - 26 Aug	SWISS	direct
23 Aug - 30 Aug	Scandinavian Airlines
29 Aug - 12 Sep	Icelandair
29 Aug - 07 Sep	Icelandair
11 Aug - 19 Aug	Icelandair
20 Aug - 27 Aug	United	direct
14 Aug - 21 Aug	Icelandair
17 Aug - 24 Aug	Icelandair
26 Aug - 02 Sep	United
14 Aug - 21 Aug	United	direct
17 Aug - 24 Aug	United	direct
29 Aug - 05 Sep	Icelandair
29 Aug - 12 Sep	SWISS	direct
29 Aug - 05 Sep	SWISS	direct
29 Aug - 07 Sep	SWISS	direct

Also check the deals for one-way flights from Chicago to Zurich 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 Zurich in August from $515

Return flights