AirHint found the following cheapest return flights from Philadelphia (PHL) to Frankfurt (FRA) in May 2026 (see full year).
Return flights
| 18 May - 01 Jun | Condor | ||
| 15 May - 29 May | Condor | ||
| 14 May - 17 May | Condor | ||
| 15 May - 06 Jun | Aer Lingus | ||
| 15 May - 29 May | Lufthansa | direct | |
| 18 May - 01 Jun | Lufthansa | direct | |
| 14 May - 17 May | Lufthansa | direct |
Also check the deals for one-way flights from Philadelphia to Frankfurt in May.
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