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

🇺🇸 N27015 - Boeing 777 224ER - United Airlines UAL879/UA879, London Heathrow (LHR) to George Bush Intcntl/Houston (IAH) - 5.0 mi away @ 39875 ft, heading SW at 528 mph. Spotted 14x before! [12:43:54 PM CDT] #A2A915 #N27015 #B772 #UNITED #UAL879 #UA879 #ADSB #ADSBbot

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

🇺🇸 N27015 - Boeing 777 224ER - United Airlines UAL879/UA879, London Heathrow (LHR) to George Bush Intcntl/Houston (IAH) - 4.6 mi away @ 39000 ft, heading SSW at 506 mph. Spotted 13x before! [12:25:53 PM CDT] #A2A915 #N27015 #B772 #UNITED #UAL879 #UA879 #ADSB #ADSBbot

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

🇺🇸 N27015 - Boeing 777 224ER - United Airlines UAL4/UA4, London Heathrow (LHR) to George Bush Intcntl/Houston (IAH) - 4.7 mi away @ 38300 ft, heading SSW at 574 mph. Spotted 12x before! [03:37:25 PM CST] #A2A915 #N27015 #B772 #UNITED #UAL4 #UA4 #ADSB #ADSBbot