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

🇺🇸 N14230 - Boeing 737NG 824/W - United Airlines UAL2158/UA2158 (EWR-CLE-IAH) - 4.9 mi away @ 40275 ft, heading WSW at 492 mph. Spotted 14x before! [06:37:03 PM CDT] #A0ACF8 #N14230 #B738 #UNITED #UAL2158 #UA2158 #ADSB #ADSBbot