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

🇺🇸 N484UA - Airbus A320 232 - United Airlines UAL1687/UA1687 (SFO-IAH-DTW) - 4.3 mi away @ 33250 ft, heading NE at 623 mph. Spotted 23x before! [01:35:11 PM CST] #A5F938 #N484UA #A320 #UNITED #UAL1687 #UA1687 #ADSB #ADSBbot