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

🇺🇸 N8574Z - Boeing 737NG 800/W - Southwest Airlines SWA4730/WN4730, St Louis Lambert (STL) to Dallas Love Field (DAL) - 3.4 mi away @ 8875 ft, heading WSW at 312 mph. Spotted 96x before! [07:42:03 PM CST] #ABC455 #N8574Z #B738 #SOUTHWEST #SWA4730 #WN4730 #TakingOff #Departure #ADSB #ADSBbot