AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Frankfurt (FRA) in September 2026 (see full year).
One-Way flights
| 13 Sep | Scandinavian Airlines | ||
| 14 Sep | Aer Lingus | ||
| 13 Sep | Austrian Airlines | direct | |
| 14 Sep | Austrian Airlines | direct |
Also check the deals for return flights from Philadelphia to Frankfurt in September.
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