I never thought I would say that $1,100 is a bargain airfare between the U.S. and Italy but this summer, it just might be. (Every summer for the past few years, planes have been packed and affordable seats at a minimum. My advice, book as early as you can.) Alitalia’s Boston Summer Promotion offers special roundtrip fares for non-stop flights between Boston and Rome ($1,122 including taxes and fees) and Boston and Milan ($1,072). Travel must take place between July 1 and September 9, 2007 and include a minimum Saturday-night stay and a maximum stay of two months. Tickets must be purchased by April 20, 2007 and can only be booked online.