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

🇺🇸 N509VL - Airbus A320 233 - Volaris VOI7703/Y47703, Chicago Midway (MDW) to Del Bajio (BJX) - 4.7 mi away @ 39325 ft, heading SSW at 514 mph. Spotted 16x before! [04:27:04 PM CDT] #A65D45 #N509VL #A320 #VOI7703 #Y47703 #ADSB #ADSBbot