Cheapest return flights from Philadelphia to Frankfurt in May from 637€

AirHint found the following cheapest return flights from Philadelphia (PHL) to Frankfurt (FRA) in May 2026 (see full year).

Return flights

03 May - 12 May Aer Lingus
06 May - 20 May Frontier Airlines
12 May - 28 May Aer Lingus
03 May - 12 May Lufthansa direct
05 May - 12 May Discover Airlines direct
02 May - 09 May Lufthansa
07 May - 10 May Frontier Airlines
06 May - 20 May United direct
09 May - 23 May Frontier Airlines
11 May - 18 May Discover Airlines direct
26 May - 02 Jun Discover Airlines direct
31 May - 07 Jun Lufthansa direct

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

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