| 09/04/1996 | N544US | roll out. |
| 07/05/1996 | N544US | first flight. |
| 20/05/1996 | N544US | del Northwest Airlines; '5644'. |
| 21/05/1996 | N544US | rgd to First Security Bank of Utah (as of 2000 Wells Fargo Bank Northwest after merger). |
| 13/10/2003 | N544US | at Denver in 2003 Northwest Airlines c/s (repainted after 09/02/2003). |
| 21/01/2007 | N544US | last service: Minneapolis-Seattle as NWA171; ferried Seattle-Kelowna as NWA9755; for installation of blended winglets. |
| 10/02/2007 | N544US | ferried Kelowna-Seattle as NWA9751 with blended winglets; in service: Seattle-Detroit as NWA250. |
| 29/10/2008 | N544US | Northwest Airlines merged into Delta Air Lines. |
| 06/02/2009 | N544US | at Tokyo/Narita in 2007 Delta Air Lines c/s with "Delta" titles (repainted after 12/01/2009). |
| 31/12/2009 | N544US | rgd to Delta Air Lines Inc. |
