AirHint found the following cheapest return flights from Chicago (ORD) to Zurich (ZRH) in May 2026 (see full year).

Return flights

01 May - 08 May	Scandinavian Airlines
12 May - 26 May	Finnair
06 May - 27 May	British Airways
10 May - 16 May	TAP
01 May - 08 May	SWISS	direct
18 May - 13 Jun	Scandinavian Airlines
31 May - 13 Jun	TAP
12 May - 26 May	SWISS	direct
06 May - 27 May	SWISS	direct
29 May - 20 Jun	TAP
18 May - 13 Jun	SWISS	direct
10 May - 16 May	SWISS	direct
29 May - 20 Jun	SWISS	direct

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

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 May from 408€

Return flights