Ending today, Delta Airlines offers roundtrip flights to Europe from select cities in the U.S. with prices starting at $657.70. (Click on "Delta Airlines" in the top line to book this deal; all taxes are included.) That's the lowest rate we've seen for fares to Europe from Delta Airlines. It's also the lowest rate we could find for select routes by $4. This price is valid on flights departing from Atlanta, GA, (ATL) with arrival in Milan, Italy, (MXP) on April 13 and return on April 20. Book this travel deal today for travel from April 6 through May 15. Click here to see more routes.