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

🇺🇸 N506DA - Airbus A321 271NXSL - Delta Air Lines DAL859/DL859, General Edward Lawrence Logan (BOS) to Salt Lake City (SLC) - 4.4 mi away @ 36175 ft, heading WSW at 495 mph. Spotted 2x before! [07:36:54 AM CDT] #A65086 #N506DA #A21N #DELTA #DAL859 #DL859 #ADSB #ADSBbot