AirHint found the following cheapest return flights from Denver (DEN) to Zurich (ZRH) in October 2025 (see full year).
Return flights
| 31 Oct - 13 Nov | Icelandair | ||
| 28 Oct - 02 Nov | British Airways | ||
| 30 Oct - 22 Nov | British Airways |
Also check the deals for one-way flights from Denver to Zurich in October.
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