Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N399DA - Boeing 737NG 832/W - Delta Air Lines DAL678/DL678, Cincinnati/Northern Kentucky (CVG) to Salt Lake City (SLC) - 4.8 mi away @ 38100 ft, heading WSW at 503 mph. Spotted 11x before! [04:30:22 PM CDT] #A4A484 #N399DA #B738 #DELTA #DAL678 #DL678 #ADSB #ADSBbot