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

🇺🇸 N838UA - Airbus A319 131 - United Airlines UAL1236/UA1236, St Louis Lambert (STL) to Denver (DEN) - 3.3 mi away @ 16425 ft, heading NW at 389 mph. Spotted 31x before. [04:48:59 PM CDT] #AB77D5 #N838UA #A319 #UNITED #UAL1236 #UA1236 #Departure #ADSB #ADSBbot

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

🇺🇸 N835UA - Airbus A319 131 - United Airlines UAL1236/UA1236 (STL-DEN-PHX) - 3.1 mi away @ 13950 ft, heading NW at 396 mph. Spotted 38x before. [06:42:21 PM CDT] #AB6CB0 #N835UA #A319 #UNITED #UAL1236 #UA1236 #TakingOff #ADSB #ADSBbot