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

🇺🇸 N781UA - Boeing 777 222 - United Airlines UAL562/UA562, San Francisco (SFO) to Washington Dulles (IAD) - 4.5 mi away @ 38300 ft, heading E at 596 mph. Spotted 2x before! [06:51:15 PM CDT] #AA9600 #N781UA #B772 #UNITED #UAL562 #UA562 #ADSB #ADSBbot