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

Return flights

15 Oct - 25 Oct	Icelandair
01 Oct - 08 Oct	Icelandair
21 Oct - 28 Oct	Icelandair
13 Oct - 20 Oct	Icelandair
13 Oct - 08 Nov	Icelandair
29 Oct - 22 Nov	Icelandair
15 Oct - 22 Oct	Icelandair
18 Oct - 26 Oct	Icelandair
07 Oct - 18 Oct	Scandinavian Airlines
20 Oct - 15 Nov	Scandinavian Airlines
08 Oct - 25 Oct	Scandinavian Airlines
18 Oct - 27 Oct	Scandinavian Airlines
16 Oct - 20 Oct	Scandinavian Airlines
26 Oct - 09 Nov	TAP
26 Oct - 09 Nov	SWISS	direct
20 Oct - 15 Nov	SWISS	direct
29 Oct - 22 Nov	United	direct
13 Oct - 08 Nov	SWISS	direct

Also check the deals for one-way flights from Washington to Zurich in October.

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 October from $387

Return flights