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

🇺🇸 N740SK - Bombardier CRJ 700 701 - American Eagle SKW6355/OO6355, Nashville (BNA) to Chicago O'Hare (ORD) - 4.3 mi away @ 37850 ft, heading NNE at 514 mph. Spotted 20x before! [11:29:07 AM CDT] #A9F424 #N740SK #CRJ7 #SKYWEST #SKW6355 #OO6355 #ADSB #ADSBbot