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

🇺🇸 N7827A - Boeing 737NG 79P/W - Southwest Airlines SWA1209/WN1209 (LAS-MCI-BNA-MSY) - 9.6 mi away @ 43400 ft, heading SE at 545 mph. Spotted 56x before! [03:44:45 PM CDT] #AA9B42 #N7827A #B737 #SOUTHWEST #SWA1209 #WN1209 #ADSB #ADSBbot