Map of the St. Louis area showing the position and track of the aircraft described in the post.
🇺🇸 N783UA - Boeing 777 222ER - United Airlines UAL4/UA4, London Heathrow (LHR) to George Bush Intcntl/Houston (IAH) - 4.3 mi away @ 35500 ft, heading SSW at 535 mph. Spotted 10x before. [03:34:07 PM CST] #AA9D6E #N783UA #B772 #UNITED #UAL4 #UA4 #ADSB #ADSBbot