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

🇺🇸 N167SY - Embraer EMB-175 LR - United Express SKW5652/OO5652, Savannah/Hilton Head (SAV) to Denver (DEN) - 4.2 mi away @ 34325 ft, heading WNW at 398 mph. Spotted 23x before. [04:45:21 PM CST] #A10D56 #N167SY #E75L #SKYWEST #SKW5652 #OO5652 #autopilot #ADSB #ADSBbot