Lufthansa has select roundtrip flights to Europe on sale for as low as $630.34. (Click on "Lufthansa Airlines" in the top line to see this sale.) That's $2 under our mention from two weeks ago and the lowest price we could find for these routes by at least $4. This price is valid on flights departing from Newark, NJ, (EWR) to Milan, Italy, (MXP) on February 15 with return on February 23. Book this travel deal by February 5 for travel from February 11 through March 12. A 14-day advance purchase is required. Click here to see more routes.