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

🇺🇸 N203NV - Airbus A320 214 - Allegiant Air AAY669/G4669, General Downing - Peoria (PIA) to Phoenix-Mesa Gateway (AZA) - 4.1 mi away @ 35500 ft, heading WSW at 478 mph. Spotted 3x before! [01:23:27 PM CDT] #A19E68 #N203NV #A320 #ALLEGIANT #AAY669 #G4669 #ADSB #ADSBbot