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

Return flights

09 Dec - 16 Dec	Aer Lingus
11 Dec - 25 Dec	TAP
08 Dec - 21 Dec	Turkish Airlines
30 Dec - 06 Jan	Turkish Airlines
28 Dec - 17 Jan	Royal Air Maroc
01 Dec - 27 Dec	Turkish Airlines
04 Dec - 27 Dec	Turkish Airlines
23 Dec - 17 Jan	Frontier Airlines
05 Dec - 27 Dec	Turkish Airlines
06 Dec - 27 Dec	TAP
28 Dec - 17 Jan	SWISS	direct
18 Dec - 10 Jan	Frontier Airlines
21 Dec - 10 Jan	Aer Lingus
09 Dec - 16 Dec	SWISS	direct
25 Dec - 08 Jan	British Airways
11 Dec - 25 Dec	SWISS	direct
05 Dec - 18 Dec	United
27 Dec - 04 Jan	Lufthansa
30 Dec - 06 Jan	SWISS	direct
23 Dec - 17 Jan	SWISS	direct

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 528€

Return flights