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

🇺🇸 N154AA - Airbus A321 231SL - American Airlines AAL2849/AA2849 (CLT-DEN-CLT) - 4.5 mi away @ 36825 ft, heading ESE at 581 mph. Spotted 18x before! [06:46:26 PM CDT] #A0D90C #N154AA #A321 #AMERICAN #AAL2849 #AA2849 #ADSB #ADSBbot