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

🇺🇸 N8681M - Boeing 737NG 8H4/W - Southwest Airlines SWA6200/WN6200 (CMH-MDW-DAL) - 4.7 mi away @ 39575 ft, heading SW at 518 mph. Spotted 84x before! [03:13:10 PM CDT] #ABEF16 #N8681M #B738 #SOUTHWEST #SWA6200 #WN6200 #ADSB #ADSBbot