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

🇺🇸 N781UA - Boeing 777 222 - United Airlines UAL2238/UA2238, Newark Liberty (EWR) to Los Angeles (LAX) - 4.2 mi away @ 36050 ft, heading W at 532 mph. Spotted 3x before! [06:57:57 PM CDT] #AA9600 #N781UA #B772 #UNITED #UAL2238 #UA2238 #ADSB #ADSBbot