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

🇺🇸 N455WN - Boeing 737NG 7H4/W - Southwest Airlines SWA1757/WN1757, Dallas Love Field (DAL) to Chicago Midway (MDW) - 5.0 mi away @ 39350 ft, heading NE at 559 mph. Spotted 72x before! [08:21:33 PM CDT] #A586B0 #N455WN #B737 #SOUTHWEST #SWA1757 #WN1757 #ADSB #ADSBbot