Philadelphia to Frankfurt, Germany for only $399 roundtrip
Cheap flights from Philadelphia, USA to Frankfurt, Germany for only $399 roundtrip with Delta.
Philadelphia, USA → Frankfurt, Germany
Big sale from the USA to Europe from only $351 roundtrip
United Airlines have put many USA to Europe routes on sale. For example, fly non-stop from Chicago to Amsterdam, Netherlands for only $351 roundtrip with United Airlines (see image below).
New York or Philadelphia to Munich or Frankfurt, Germany from only $390 roundtrip
Cheap flights from New York or Philadelphia to Munich or Frankfurt, Germany from only $390 roundtrip with American Airlines and Finnair.
ERROR FARE: Philadelphia to Frankfurt, Germany for only $414 Return
Error fare flights from Philadelphia, USA to Frankfurt, Germany for only $414 return with US Airways & Lufthansa.
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