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

🇺🇸 N8568Z - Boeing 737NG 800/W - Southwest Airlines SWA3463/WN3463 (CHS-BWI-LAX) - 4.0 mi away @ 35000 ft, heading W at 440 mph. Spotted 91x before! [11:32:39 AM CST] #ABC12A #N8568Z #B738 #SOUTHWEST #SWA3463 #WN3463 #ADSB #ADSBbot