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

Return flights

22 Sep - 21 Oct	Scandinavian Airlines
19 Sep - 26 Sep	Scandinavian Airlines
04 Sep - 11 Sep	Scandinavian Airlines
18 Sep - 01 Oct	Scandinavian Airlines
05 Sep - 12 Sep	Scandinavian Airlines
16 Sep - 21 Sep	Scandinavian Airlines
26 Sep - 28 Sep	Scandinavian Airlines
07 Sep - 17 Sep	Frontier Airlines
07 Sep - 14 Sep	Frontier Airlines
16 Sep - 23 Sep	United
18 Sep - 01 Oct	Delta	direct
12 Sep - 19 Sep	United
29 Sep - 06 Oct	United
26 Sep - 03 Oct	United
07 Sep - 17 Sep	Delta	direct

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

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 Atlanta to Zurich in September from 437€

Return flights