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

Return flights

29 Oct - 12 Nov	Scandinavian Airlines
02 Oct - 16 Oct	Scandinavian Airlines
07 Oct - 18 Oct	Scandinavian Airlines
29 Oct - 12 Nov	United	direct
10 Oct - 17 Oct	Icelandair
15 Oct - 22 Oct	Icelandair
15 Oct - 22 Oct	United	direct
05 Oct - 12 Oct	Icelandair
30 Oct - 06 Nov	United	direct
10 Oct - 17 Oct	United	direct
20 Oct - 27 Oct	United	direct
25 Oct - 01 Nov	United	direct
02 Oct - 16 Oct	United	direct
07 Oct - 18 Oct	SWISS	direct

Also check the deals for one-way flights from Chicago to Zurich in October.

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 October from $456

Return flights