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

Return flights

30 Dec - 16 Jan	American Airlines
29 Dec - 16 Jan	American Airlines
10 Dec - 15 Dec	American Airlines	direct
06 Dec - 13 Dec	American Airlines	direct
15 Dec - 18 Jan	Air Canada
24 Dec - 31 Dec	Air Canada
15 Dec - 10 Jan	Air Canada
13 Dec - 06 Jan	Air Canada
24 Dec - 28 Dec	Air Canada
28 Dec - 04 Jan	Air Canada
27 Dec - 04 Jan	Air Canada
25 Dec - 29 Dec	Lufthansa
21 Dec - 10 Jan	Air Canada
22 Dec - 28 Dec	Air Canada
15 Dec - 20 Dec	Icelandair
28 Dec - 04 Jan	American Airlines	direct
28 Dec - 03 Jan	Air Canada
20 Dec - 27 Dec	Air Canada
22 Dec - 28 Dec	American Airlines	direct
20 Dec - 26 Dec	Air Canada

Also check the deals for one-way flights from Philadelphia to Zurich in December.

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 December from $455

Return flights