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

🇺🇸 N12216 - Boeing 737NG 824/W - United Airlines UAL2297/UA2297, Denver (DEN) to Norfolk (ORF) - 4.8 mi away @ 37325 ft, heading ESE at 535 mph. Spotted 10x before! [10:36:39 PM CDT] #A05DBA #N12216 #B738 #UNITED #UAL2297 #UA2297 #ADSB #ADSBbot