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

Return flights

29 Oct - 05 Nov	United
28 Oct - 04 Nov	United
31 Oct - 07 Nov	United
26 Oct - 02 Nov	United
25 Oct - 01 Nov	United
07 Oct - 14 Oct	United
08 Oct - 15 Oct	United
22 Oct - 29 Oct	United
16 Oct - 23 Oct	United
09 Oct - 16 Oct	United
17 Oct - 24 Oct	United
23 Oct - 30 Oct	United
20 Oct - 27 Oct	United
13 Oct - 20 Oct	United
19 Oct - 26 Oct	United

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Zurich in October from 470€

Return flights