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

🇺🇸 N539GJ - Bombardier CRJ 700 702 - United Express GJS3393/G73393, St Louis Lambert (STL) to Chicago O'Hare (ORD) - 3.4 mi away @ 3525 ft, heading WNW at 254 mph. Spotted 20x before. [06:59:12 PM CDT] #A6D27B #N539GJ #CRJ7 #LINDBERGH #GJS3393 #G73393 #Landing #Departure #ADSB #ADSBbot