Cheapest return flights from Denver to Zurich in September from $461

Best time to book flights for Denver (DEN) to Zurich (ZRH) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Zurich (ZRH) in September 2025 (see full year).

Return flights

30 Sep - 07 Oct Icelandair
25 Sep - 02 Oct Icelandair
10 Sep - 17 Sep Icelandair
29 Sep - 04 Oct British Airways
05 Sep - 08 Sep British Airways
05 Sep - 08 Sep SWISS direct
05 Sep - 12 Sep United
15 Sep - 22 Sep United
08 Sep - 11 Sep Icelandair
20 Sep - 27 Sep United

Also check the deals for one-way flights from Denver to Zurich in September.

Skyscanner

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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