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

🇺🇸 N8742M - Boeing 737MAX 8 - Southwest Airlines SWA667/WN667, Baltimore/Washington Thurgood Marshall (BWI) to Harry Reid (LAS) - 4.1 mi away @ 35100 ft, heading W at 457 mph. Spotted 59x before. [07:23:24 AM CST] #AC07DC #N8742M #B38M #SOUTHWEST #SWA667 #WN667 #ADSB #ADSBbot