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

Return flights

10 Dec - 17 Dec	Condor
13 Dec - 17 Jan	British Airways
23 Dec - 30 Dec	Air Canada
04 Dec - 31 Dec	TAP
20 Dec - 18 Jan	Air Transat
10 Dec - 17 Dec	SWISS	direct
08 Dec - 15 Dec	Air Canada
20 Dec - 09 Jan	Air Transat
19 Dec - 09 Jan	Condor
19 Dec - 07 Jan	Condor
04 Dec - 31 Dec	Air Canada	direct
13 Dec - 17 Jan	SWISS	direct
21 Dec - 04 Jan	Air Transat
25 Dec - 04 Jan	Air Transat
20 Dec - 18 Jan	SWISS	direct
19 Dec - 09 Jan	Air Canada	direct

Also check the deals for one-way flights from Toronto 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 Toronto to Zurich in December from $735

Return flights