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

🇺🇸 N619UX - Embraer EMB-175 LL - United Express SKW5777/OO5777, Denver (DEN) to Wilmington (ILM) - 4.3 mi away @ 36950 ft, heading E at 555 mph. Spotted 16x before! [12:30:31 PM CDT] #A81205 #N619UX #E75L #SKYWEST #SKW5777 #OO5777 #autopilot #ADSB #ADSBbot