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

🇺🇸 N77542 - Boeing 737NG 800/W - United Airlines UAL2702/UA2702, Gerald R Ford (GRR) to Denver (DEN) - 4.5 mi away @ 38250 ft, heading WSW at 528 mph. Spotted 15x before! [08:07:48 AM CDT] #AA7E99 #N77542 #B738 #UNITED #UAL2702 #UA2702 #ADSB #ADSBbot