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

🇺🇸 N840UA - Airbus A319 131 - United Airlines UAL697/UA697, Ronald Reagan Washington Ntl (DCA) to George Bush Intcntl/Houston (IAH) - 4.7 mi away @ 39200 ft, heading SSW at 502 mph. Spotted 27x before! [08:59:55 AM CDT] #AB819C #N840UA #A319 #UNITED #UAL697 #UA697 #ADSB #ADSBbot