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

Return flights

24 Aug - 31 Aug	Icelandair
15 Aug - 22 Aug	Scandinavian Airlines
18 Aug - 25 Aug	Icelandair
26 Aug - 02 Sep	Icelandair
24 Aug - 07 Sep	Icelandair
21 Aug - 28 Aug	TAP
21 Aug - 04 Sep	TAP
04 Aug - 18 Aug	TAP
24 Aug - 28 Aug	TAP
28 Aug - 04 Sep	Icelandair
12 Aug - 19 Aug	United	direct
03 Aug - 19 Aug	SWISS	direct
10 Aug - 19 Aug	SWISS	direct
22 Aug - 29 Aug	Icelandair
27 Aug - 10 Sep	United	direct
26 Aug - 02 Sep	United	direct
31 Aug - 07 Sep	Icelandair
16 Aug - 29 Sep	Turkish Airlines
21 Aug - 04 Sep	SWISS	direct
28 Aug - 04 Sep	United	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 344€

Return flights