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

🇺🇸 N221WN - Boeing 737NG 7H4/W - Southwest Airlines SWA4078/WN4078, General Mitchell (MKE) to Dallas Love Field (DAL) - 4.7 mi away @ 39650 ft, heading SW at 418 mph. Spotted 54x before! [10:34:30 AM CST] #A1E6B9 #N221WN #B737 #SOUTHWEST #SWA4078 #WN4078 #ADSB #ADSBbot