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

🇺🇸 N8697C - Boeing 737NG 8H4/W - Southwest Airlines SWA4460/WN4460, St Louis Lambert (STL) to Denver (DEN) - 3.6 mi away @ 18200 ft, heading WNW at 409 mph. Spotted 90x before. [09:07:54 PM CDT] #ABF396 #N8697C #B738 #SOUTHWEST #SWA4460 #WN4460 #Departure #ADSB #ADSBbot