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

🇺🇸 N66828 - Boeing 737NG 924ER/W - United Airlines UAL2396/UA2396, Washington Dulles (IAD) to Los Angeles (LAX) - 3.8 mi away @ 33025 ft, heading W at 545 mph. Spotted 5x before! [11:06:09 AM CDT] #A8D4B0 #N66828 #B739 #UNITED #UAL2396 #UA2396 #ADSB #ADSBbot