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

🇺🇸 N8502Z - Boeing 737NG 800/W - Southwest Airlines SWA4533/WN4533, Charleston Afb/International (CHS) to Denver (DEN) - 4.4 mi away @ 35975 ft, heading WNW at 479 mph. Spotted 88x before. [05:49:17 AM CST] #ABAA0E #N8502Z #B738 #SOUTHWEST #SWA4533 #WN4533 #ADSB #ADSBbot