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

🇺🇸 N57852 - Boeing 757 324/W - United Airlines UAL1828/UA1828, Orlando (MCO) to Chicago O'Hare (ORD) - 4.3 mi away @ 36175 ft, heading NNE at 544 mph. Spotted 3x before! [05:07:26 PM CDT] #A76F43 #N57852 #B753 #UNITED #UAL1828 #UA1828 #ADSB #ADSBbot