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

🇺🇸 N8524Z - Boeing 737NG 800/W - Southwest Airlines SWA3022/WN3022, Washington Dulles (IAD) to Denver (DEN) - 4.5 mi away @ 38450 ft, heading WSW at 454 mph. Spotted 83x before! [06:09:09 AM CST] #ABB1C2 #N8524Z #B738 #SOUTHWEST #SWA3022 #WN3022 #ADSB #ADSBbot