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

🇺🇸 N8638A - Boeing 737NG 8H4/W - Southwest Airlines SWA2902/WN2902, Denver (DEN) to Washington Dulles (IAD) - 4.7 mi away @ 38000 ft, heading ESE at 593 mph. Spotted 85x before! [01:14:50 PM CDT] #ABDD6D #N8638A #B738 #SOUTHWEST #SWA2902 #WN2902 #ADSB #ADSBbot