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

Return flights

31 Dec - 17 Jan	Scandinavian Airlines
10 Dec - 14 Dec	Scandinavian Airlines
11 Dec - 14 Dec	Scandinavian Airlines
15 Dec - 15 Jan	jetBlue
22 Dec - 15 Jan	jetBlue
22 Dec - 08 Jan	jetBlue
24 Dec - 31 Dec	Delta
12 Dec - 18 Jan	Icelandair
25 Dec - 29 Dec	Scandinavian Airlines
23 Dec - 02 Jan	Air Canada
18 Dec - 21 Dec	Delta
26 Dec - 04 Jan	Air Canada
18 Dec - 04 Jan	Delta
27 Dec - 02 Jan	Delta
26 Dec - 03 Jan	Icelandair

Also check the deals for one-way flights from Washington 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 Washington to Zurich in December from 534€

Return flights