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

🇺🇸 N7734H - Boeing 737NG 7BD/W - Southwest Airlines SWA1604/WN1604, William P Hobby (HOU) to Ronald Reagan Washington Ntl (DCA) - 4.8 mi away @ 41450 ft, heading NE at 535 mph. Spotted 48x before! [08:48:44 PM CDT] #AA7718 #N7734H #B737 #SOUTHWEST #SWA1604 #WN1604 #ADSB #ADSBbot