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

🇺🇸 N47345 - Boeing 737MAX 8 - United Airlines UAL2463/UA2463 (SAV-ORD-DFW) - 4.3 mi away @ 37250 ft, heading SW at 471 mph. Spotted 4x before! [09:18:03 PM CDT] #A5CF41 #N47345 #B38M #UNITED #UAL2463 #UA2463 #ADSB #ADSBbot