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

Return flights

16 Sep - 23 Sep	British Airways	direct
10 Sep - 17 Sep	United
11 Sep - 18 Sep	Air Canada
11 Sep - 23 Sep	Air Canada
22 Sep - 29 Sep	United
25 Sep - 02 Oct	United
07 Sep - 14 Sep	United
28 Sep - 05 Oct	United
04 Sep - 11 Sep	United
01 Sep - 08 Sep	United
13 Sep - 20 Sep	United
11 Sep - 18 Sep	British Airways	direct

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Milano in September from 569€

Return flights