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

🇺🇸 N8665D - Boeing 737NG 8H4/W - Southwest Airlines SWA3838/WN3838, Chicago Midway (MDW) to Los Angeles (LAX) - 4.4 mi away @ 38300 ft, heading WSW at 471 mph. Spotted 75x before! [10:22:30 PM CDT] #ABE82C #N8665D #B738 #SOUTHWEST #SWA3838 #WN3838 #ADSB #ADSBbot