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 SWA4221/WN4221 (STL-DEN-PDX-SMF-SNA-LAS) - 3.3 mi away @ 17625 ft, heading WNW at 418 mph. Spotted 49x before! [05:49:53 AM CST] #A4C8A3 #N407WN #B737 #SOUTHWEST #SWA4221 #WN4221 #STL #ADSB