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

🇺🇸 N499WN - Boeing 737NG 7H4/W - Southwest Airlines SWA2281/WN2281 (ELP-DAL-ORD) - 5.0 mi away @ 40500 ft, heading NNE at 531 mph. Spotted 63x before! [08:45:29 PM CDT] #A63388 #N499WN #B737 #SOUTHWEST #SWA2281 #WN2281 #ADSB #ADSBbot