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

🇺🇸 N489UA - Airbus A320 232 - United Airlines UAL8193/UA8193, Winnipeg James Armstrong Richardson (YWG) to Toronto Pearson (YYZ) - 4.6 mi away @ 37900 ft, heading SW at 540 mph. Spotted 30x before! [04:52:38 PM CDT] #A60BCB #N489UA #A320 #UNITED #UAL8193 #UA8193 #ADSB #ADSBbot