Boeing bid farewell to an icon on Tuesday, delivering its final 747 jumbo jet as thousands of workers who helped build the planes over the past 55 years looked on.

Since its first flight in 1969, the giant yet graceful 747 has served as a cargo plane, a commercial aircraft capable of carrying nearly 500 passengers, a transport for NASA’s space shuttles, and the Air Force One presidential aircraft. It revolutionized travel, connecting international cities that had never before had direct routes and helping democratize passenger flight.

But over about the past 15 years, Boeing and its European rival Airbus have introduced more profitable and fuel efficient wide-body planes, with only two engines to maintain instead of the 747′s four. The final plane is the 1,574th built by Boeing in the Puget Sound region of Washington state.

Thousands of workers joined Boeing and other industry executives from around the world — as well as actor and pilot John Travolta, who has flown 747s — Tuesday for a ceremony in the company’s massive factory north of Seattle, marking the delivery of the last one to cargo carrier Atlas Air.