AirHint found the following cheapest return flights from Washington (IAD) to Zurich (ZRH) in August 2026 (see full year).

Return flights

27 Aug - 06 Sep	Scandinavian Airlines
16 Aug - 22 Aug	Scandinavian Airlines
10 Aug - 17 Aug	Aer Lingus
10 Aug - 15 Aug	Lufthansa
10 Aug - 22 Aug	TAP
08 Aug - 22 Aug	TAP
10 Aug - 17 Aug	SWISS	direct
10 Aug - 22 Aug	SWISS	direct
08 Aug - 22 Aug	SWISS	direct
27 Aug - 06 Sep	SWISS	direct
16 Aug - 22 Aug	SWISS	direct
10 Aug - 15 Aug	SWISS	direct

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

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 August from 461€

Return flights