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

🇺🇸 N8866H - Boeing 737MAX 8 - Southwest Airlines SWA3319/WN3319, Baltimore/Washington Thurgood Marshall (BWI) to Harry Reid (LAS) - 4.2 mi away @ 36175 ft, heading W at 445 mph. Spotted 92x before! [09:50:24 AM CST] #AC3751 #N8866H #B38M #SOUTHWEST #SWA3319 #WN3319 #ADSB #ADSBbot