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

🇺🇸 N8957Q - BOEING 737 MAX 8 - SOUTHWEST AIRLINES CO SWA3844/WN3844, St Louis Lambert (STL) to Harry Reid (LAS) - 3.4 mi away @ 9100 ft, heading WSW at 304 mph. Spotted 21x before. [05:23:22 AM CDT] #AC5B43 #N8957Q #B38M #SWA3844 #WN3844 #TakingOff #Departure #ADSB #ADSBbot