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

🇺🇸 N8307K - Boeing 737NG 8H4/W - Southwest Airlines SWA8803/WN8803, Chicago Midway (MDW) to Dallas Love Field (DAL) - 5.1 mi away @ 40425 ft, heading SW at 512 mph. Spotted 88x before. [04:43:11 PM CST] #AB5BB1 #N8307K #B738 #SOUTHWEST #SWA8803 #WN8803 #ADSB #ADSBbot