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

🇺🇸 N8554X - Boeing 737NG 800/W - Southwest Airlines SWA1017/WN1017, St Louis Lambert (STL) to Kansas City (MCI) - 3.2 mi away @ 14400 ft, heading NW at 403 mph. Spotted 55x before! [10:36:22 AM CST] #ABBCE5 #N8554X #B738 #SOUTHWEST #SWA1017 #WN1017 #TakingOff #Departure #ADSB #ADSBbot