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

🇺🇸 N709FR - Airbus A321 211SL - Frontier Airlines FFT9509/F99509 - 3.3 mi away @ 10450 ft, heading SSW at 357 mph. Spotted 54x before. [08:42:44 PM CST] #A9768A #N709FR #A321 #FRONTIER_FLIGHT #FFT9509 #F99509 #Landing #ADSB #ADSBbot