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

Return flights

02 Sep - 09 Sep	United
17 Sep - 25 Sep	Air Canada
23 Sep - 30 Sep	United
08 Sep - 15 Sep	Lufthansa
17 Sep - 24 Sep	Lufthansa
14 Sep - 21 Sep	United
15 Sep - 22 Sep	Lufthansa
05 Sep - 12 Sep	United
11 Sep - 18 Sep	United
17 Sep - 21 Sep	Air Canada
26 Sep - 03 Oct	United

Also check the deals for one-way flights from Philadelphia to Munich 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 Munich in September from $634

Return flights