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
23 Sep - 29 Sep	Scandinavian Airlines
24 Sep - 02 Oct	Scandinavian Airlines
07 Sep - 17 Sep	Frontier Airlines
21 Sep - 27 Sep	Frontier Airlines
07 Sep - 17 Sep	Delta	direct
10 Sep - 17 Sep	United
16 Sep - 23 Sep	United
04 Sep - 11 Sep	United
07 Sep - 14 Sep	United
01 Sep - 08 Sep	United
19 Sep - 26 Sep	United
28 Sep - 05 Oct	United

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 439€

Return flights