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

Return flights

30 Oct - 13 Nov	Scandinavian Airlines
03 Oct - 17 Oct	Icelandair
25 Oct - 01 Nov	Scandinavian Airlines
15 Oct - 22 Oct	Icelandair
10 Oct - 17 Oct	Icelandair
15 Oct - 22 Oct	United	direct
30 Oct - 06 Nov	United	direct
30 Oct - 13 Nov	SWISS	direct
10 Oct - 17 Oct	United	direct
20 Oct - 27 Oct	United	direct
03 Oct - 17 Oct	SWISS	direct
25 Oct - 01 Nov	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 337€

Return flights