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

🇺🇸 N755SK - Bombardier CRJ 700 701 - American Eagle SKW6450/OO6450 (ORD-TUL-ORD) - 4.4 mi away @ 36700 ft, heading WSW at 450 mph. Spotted 20x before. [08:11:36 AM CDT] #AA2E36 #N755SK #CRJ7 #SKYWEST #SKW6450 #OO6450 #ADSB #ADSBbot