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

🇺🇸 N35204 - Boeing 737NG 824/W - United Airlines UAL622T/UA622T (PHL-ORD-AUS) - 3.5 mi away @ 29575 ft, heading SW at 474 mph. Spotted 16x before! [07:08:04 PM CST] #A3EEB0 #N35204 #B738 #UNITED #UAL622T #UA622T #ADSB #ADSBbot