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

🇺🇸 N12754 - Boeing 737NG 7V3/W - United Airlines UAL2388/UA2388 (DCA-IAH-SFO) - 4.6 mi away @ 39225 ft, heading WSW at 444 mph. Spotted 22x before! [05:45:04 PM CDT] #A070D7 #N12754 #B737 #UNITED #UAL2388 #UA2388 #ADSB #ADSBbot