Delta Airlines Profile: Delta Airlines Events (3) (9:42 a.m.) September 11, 2001: Delta Air Lines Tells Flight 1989 to Land at Cleveland Airport, but FAA Not Informed 2001-09-11 (9:50 a.m.) September 11, 2001: Delta Air Lines Reports Four Missing Planes 2001-09-11 (Midday) August 27-28, 2005: Delta Airlines Cancels All Sunday Flights 2005-08-27