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

🇺🇸 N8584Z - Boeing 737NG 800/W - Southwest Airlines SWA3810/WN3810, General Mitchell (MKE) to Dallas Love Field (DAL) - 4.8 mi away @ 38550 ft, heading SW at 478 mph. Spotted 103x before. [03:04:13 PM CDT] #ABC80C #N8584Z #B738 #SOUTHWEST #SWA3810 #WN3810 #ADSB #ADSBbot