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

Return flights

17 May - 24 May	Icelandair
25 May - 01 Jun	Aer Lingus
21 May - 11 Jun	Turkish Airlines
27 May - 10 Jun	Icelandair
27 May - 03 Jun	Icelandair
27 May - 12 Jun	Icelandair
31 May - 14 Jun	Icelandair
25 May - 12 Jun	Condor
02 May - 09 May	Icelandair
22 May - 29 May	Icelandair
27 May - 10 Jun	SWISS	direct
27 May - 12 Jun	SWISS	direct
31 May - 14 Jun	SWISS	direct

Also check the deals for one-way flights from Denver 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 Denver to Zurich in May from 638€

Return flights