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

🇺🇸 N7727A - Boeing 737NG 76N/W - Southwest Airlines SWA3491/WN3491 - 3.3 mi away @ 6225 ft, heading S at 309 mph. Spotted 89x before! [07:38:00 PM CDT] #AA73C3 #N7727A #B737 #SOUTHWEST #SWA3491 #WN3491 #TakingOff #ADSB #ADSBbot