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

🇺🇸 N407WN - Boeing 737NG 7H4/W - Southwest Airlines SWA4872/WN4872 (LAX-PHX-IAD) - 4.6 mi away @ 37200 ft, heading ENE at 612 mph. Spotted 50x before! [05:01:32 PM CST] #A4C8A3 #N407WN #B737 #SOUTHWEST #SWA4872 #WN4872 #ADSB #ADSBbot