Cheapest return flights from Seattle to Zurich in September from 409€

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

Return flights

24 Sep - 18 Oct Scandinavian Airlines
04 Sep - 11 Sep Icelandair
10 Sep - 17 Sep Icelandair
03 Sep - 10 Sep Icelandair
05 Sep - 10 Sep Icelandair
01 Sep - 06 Sep Icelandair
30 Sep - 07 Oct Icelandair
24 Sep - 01 Oct Icelandair
23 Sep - 08 Oct Icelandair
25 Sep - 02 Oct Icelandair
16 Sep - 23 Sep Icelandair
17 Sep - 24 Sep Icelandair
23 Sep - 30 Sep Icelandair
15 Sep - 22 Sep Icelandair
09 Sep - 16 Sep United
25 Sep - 12 Oct Condor
27 Sep - 11 Oct Condor
29 Sep - 06 Oct Icelandair
20 Sep - 06 Oct Condor
28 Sep - 05 Oct United

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

Skyscanner

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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