Delta Air Lines Flight 1989 was a regularly scheduled flight offering nonstop morning service on September 11, 2001, from Logan International Airport to Los Angeles International Airport on a Boeing 767-300ER aircraft.

After the hijacked planes struck the World Trade Center, Boston Center air traffic controllers realized that both aircraft were Boeing 767s departing Logan Airport for Los Angeles, which was also true of Delta 1989.

It was later confirmed that the transmission had come from United Airlines Flight 93, which was in the same vicinity as Delta 1989, and would later crash into a field in Shanksville, Pennsylvania, after the passengers and crew revolted against the hijackers.

The flight reversed course over Toledo, Ohio, and landed uneventfully in Cleveland at 09:47, some six minutes after Boston Center called NEADS and told of Delta 1989.

[3][4] The Federal Bureau of Investigation (FBI) and city SWAT team evacuated the airport and held the aircraft at gunpoint on the tarmac for two hours, though all passengers were cleared.