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

🇺🇸 N372FR - Airbus A320 251NSL - Frontier Airlines FFT1735/F91735, Chicago Midway (MDW) to Phoenix Sky Harbor (PHX) - 4.3 mi away @ 38050 ft, heading SW at 499 mph. Spotted 24x before! [10:04:06 PM CDT] #A43BC6 #N372FR #A20N #FRONTIER_FLIGHT #FFT1735 #F91735 #ADSB #ADSBbot