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

🇺🇸 N7740A - Boeing 737NG 7BD/W - Southwest Airlines SWA8633/WN8633, Northwest Arkansas Ntl (XNA) to Chicago Midway (MDW) - 4.9 mi away @ 40575 ft, heading NNE at 506 mph. Spotted 59x before! [08:56:35 PM CDT] #AA7A3C #N7740A #B737 #SOUTHWEST #SWA8633 #WN8633 #ADSB #ADSBbot