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

🇺🇸 N464WN - Boeing 737NG 7H4/W - Southwest Airlines SWA687/WN687 (SDF-PHX-LAS-SNA) - 4.5 mi away @ 37475 ft, heading WNW at 408 mph. Spotted 62x before! [04:59:55 PM CST] #A5AA78 #N464WN #B737 #SOUTHWEST #SWA687 #WN687 #ADSB #ADSBbot