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

Return flights

08 Sep - 15 Sep	Spirit Airlines
21 Sep - 28 Sep	Frontier Airlines
05 Sep - 12 Sep	Spirit Airlines
06 Sep - 28 Sep	Frontier Airlines
02 Sep - 07 Sep	Spirit Airlines
05 Sep - 08 Sep	Scandinavian Airlines
13 Sep - 20 Sep	United
25 Sep - 02 Oct	United
22 Sep - 29 Sep	United
28 Sep - 05 Oct	United
07 Sep - 14 Sep	United
03 Sep - 10 Sep	United

Also check the deals for one-way flights from Atlanta to Milano 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 Milano in September from $565

Return flights