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

🇺🇸 N8961K - BOEING 737 MAX 8 - Southwest Airlines SWA4004/WN4004, Southwest Florida (RSW) to St Louis Lambert (STL) - 3.7 mi away @ 3475 ft, heading NE at 255 mph. Spotted 15x before! [04:28:08 PM CST] #AC5E23 #N8961K #B38M #SOUTHWEST #SWA4004 #WN4004 #Landing #Arrival #ADSB #ADSBbot