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

🇺🇸 N64809 - Boeing 737NG 924ER/W - United Airlines UAL2440/UA2440 (IAD-ORD-LAS) - 3.7 mi away @ 31475 ft, heading WSW at 513 mph. Spotted 7x before! [02:03:57 PM CDT] #A8856D #N64809 #B739 #UNITED #UAL2440 #UA2440 #ADSB #ADSBbot