| 01/02/1989 | N645DL | roll out. |
| 03/03/1989 | N645DL | first flight. |
| 06/04/1989 | N645DL | del Delta air Lines; '645'. |
| 07/04/1989 | N645DL | rgd to Delta Air Lines Inc. |
| 00/10/2001 | N645DL | at Philadelphia in 2000 Delta Air Lines c/s with "Delta" titles (repainted after 00/01/2001). |
| 30/12/2002 | N645DL | bt Arkia Leasing; opb Delta Air Lines on lease. |
| 31/12/2002 | N645DL | rgd to Wilmington Trust Company. |
| 19/10/2003 | N645DL | at Los Angeles in full Song c/s with "flysong.com" titles (repainted after 18/05/2003). |
| 01/12/2006 | N645DL | at Atlanta in 2002 Delta Air Lines c/s with "Delta" titles (repainted after 10/07/2006). |
| 16/11/2009 | N645DL | entered hangar at Atlanta; for repaint. |
| 22/11/2009 | N645DL | r/o at Atlanta in 2007 Delta Air Lines c/s with "Delta" titles. |
| 14/09/2013 | N645DL | last service: Salt Lake City-Atlanta as DAL1222. |
| 15/09/2013 | N645DL | ferried Atlanta-Blytheville as DAL9931 (TT: 83153 hours; 36139 cycles); for part-out and scrapping. |
| 17/10/2013 | N645DL | bt Delta Air Lines Inc. |
| 22/11/2013 | N645DL | rgd to Delta Air Lines Inc. |
| 25/03/2015 | N645DL | at Blytheville in basic Delta Air Lines c/s without titles and tail logo. |
| 06/12/2018 | N645DL | registration cancelled. |
Cancelled From FAA Register on 2018-12-06