Cheapest return PHL–FRA flights, May

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

Return flights

24 May - 04 Jun Condor
03 May - 12 May KLM
05 May - 13 May Air France
21 May - 27 May Spirit Airlines
19 May - 03 Jun Condor
24 May - 07 Jun Condor
18 May - 25 May Spirit Airlines
24 May - 05 Jun Condor
03 May - 10 May Delta
21 May - 30 May Spirit Airlines
17 May - 27 May Frontier Airlines
11 May - 06 Jun Frontier Airlines
26 May - 05 Jun Condor
25 May - 05 Jun Condor
24 May - 06 Jun Spirit Airlines
06 May - 20 May Frontier Airlines
18 May - 06 Jun Frontier Airlines
25 May - 06 Jun Spirit Airlines
16 May - 30 May Frontier Airlines
08 May - 30 May Spirit Airlines

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

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