Cheapest return flights from Philadelphia to Frankfurt in September from $688

Best time to book flights for Philadelphia (PHL) to Frankfurt (FRA) flights at AirHint

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

Return flights

25 Sep - 09 Oct Condor
22 Sep - 06 Oct Condor
03 Sep - 10 Sep Lufthansa direct
23 Sep - 30 Sep Lufthansa direct
08 Sep - 15 Sep Lufthansa direct
22 Sep - 06 Oct Lufthansa direct
25 Sep - 09 Oct Lufthansa direct
18 Sep - 25 Sep Lufthansa direct
13 Sep - 20 Sep United

Also check the deals for one-way flights from Philadelphia to Frankfurt in September.

Skyscanner

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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