The departure marked a final separation for Discovery and Kennedy Space Center, which had served as the shuttle's home base and launch site since it first arrived at the Florida spaceport atop the same carrier aircraft on Nov. 9, 1983. [Photos: Discovery's Final Piggyback Flight in Pictures]
The retired space plane was delivered to the nation's capital mounted to the space agency's Shuttle Carrier Aircraft, a modified Boeing 747 jumbo jet, on a final ferry flight that included a historic flyover of the National Mall and some of its nearby monuments and federal buildings.
The air- and spacecraft duo landed at Washington Dulles International Airport at 11:05 a.m. EDT
The four-hour flight left the Kennedy Space Center in Florida at 7:00 a.m. (1100 GMT), just after dawn. Guests at Kennedy's visitor complex and spectators along the space coast were treated to a final flyby of Discovery before the shuttle began its trip up the Eastern Seaboard.