Cheapest return flights from Washington to Zurich in September from $499

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

Return flights

29 Sep - 06 Oct Scandinavian Airlines
11 Sep - 31 Oct Scandinavian Airlines
02 Sep - 11 Sep Scandinavian Airlines
04 Sep - 14 Sep Scandinavian Airlines
09 Sep - 16 Sep Air Canada
18 Sep - 21 Sep Scandinavian Airlines
18 Sep - 25 Sep Scandinavian Airlines
10 Sep - 18 Sep Scandinavian Airlines
04 Sep - 09 Sep Scandinavian Airlines
03 Sep - 15 Sep Scandinavian Airlines
01 Sep - 30 Sep Scandinavian Airlines
05 Sep - 11 Sep Scandinavian Airlines
18 Sep - 03 Oct Scandinavian Airlines
11 Sep - 31 Oct SWISS direct
29 Sep - 06 Oct SWISS direct

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

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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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