Oh where, Oh Where. Did my aircraft go?
 

There used to be a morning flight out of SGF for delta that was an MD-88. On May 1st, this flight stopped. All flights out of SGF are now Delta Express. Does anyone have any information on why they no longer have this flight? It was flying under DL2099. I have looked up several of the tail numbers and these aircraft are still in service, so it appears they just canceled the flight itself. Below is a snippit via the flight number

01-May-2017 A319 Jackson Hole (KJAC) Salt Lake City Intl (KSLC) 06:51AM MDT 07:29AM MDT 0:37
30-Apr-2017 MD88 Springfield (KSGF) Hartsfield-Jackson Intl (KATL) 05:40AM CDT 08:14AM EDT 1:34

DL decided that SGF-ATL no longer warrants mainline service. Simple as that.

Looks like that route is no longer served by mainline. Instead it's Delta Connection. It will be a smaller aircraft, but occasionally Delta will offer more flights on regional aircraft per day compared to mainline jets to maintain roughly the same capacity. Not saying that is what will happen here, but it is not uncommon.

As for tail numbers: aircraft rotate continuously throughout the fleet to various destinations. a specific plane could be on the east coast today and west coast tomorrow.