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

Return flights

07 Dec - 23 Dec	Delta
08 Dec - 23 Dec	Delta
03 Dec - 13 Dec	Frontier Airlines
23 Dec - 07 Jan	Frontier Airlines
23 Dec - 17 Jan	Frontier Airlines
01 Dec - 10 Dec	Delta
21 Dec - 10 Jan	Frontier Airlines
15 Dec - 22 Dec	Delta
22 Dec - 07 Jan	Frontier Airlines
12 Dec - 21 Dec	Delta
20 Dec - 31 Dec	Delta
24 Dec - 07 Jan	Delta
17 Dec - 03 Jan	Delta

Also check the deals for one-way flights from Chicago 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 Chicago to Zurich in December from $809

Return flights