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

🇺🇸 N8875B - Boeing 737MAX 8 - Southwest Airlines SWA3543/WN3543, St Louis Lambert (STL) to Southwest Florida (RSW) - 3.4 mi away @ 6225 ft, heading S at 307 mph. Spotted 41x before! [06:19:49 PM CST] #AC3ADF #N8875B #B38M #SOUTHWEST #SWA3543 #WN3543 #TakingOff #Departure #ADSB #ADSBbot