Cheapest return flights from Frankfurt to Philadelphia in September from 417€

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

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

Return flights

02 Sep - 16 Sep United
15 Sep - 29 Sep British Airways
02 Sep - 16 Sep Lufthansa direct
15 Sep - 21 Sep Lufthansa direct
15 Sep - 29 Sep Lufthansa direct

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