Lufthansa has select roundtrip flights to Europe on sale for as low as $659.69. (Click on "Lufthansa Airlines" in the top line to see this sale.) That's the lowest price we could find for these routes by at least $21. This price is valid on flights departing from Tampa, FL, (TPA) with return on St. Petersburg, Russia, (LED) on September 14 and return on September 24. Book this travel deal by July 8 for travel from August 23, 2015 through January 24, 2016. Other notable deals:

Newark (EWR) to Milan (MXP) from $705.60

Miami (MIA) to Hamburg (HAM) from $889.04

Philadelphia (PHL) to Budapest (BUD) from $933.56

see all available Lufthansa fares to Europe

All prices, dates, and booking details were valid at the time of publication.