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

🇺🇸 N211NV - Airbus A320 214SL - Allegiant Air AAY345/G4345, Nashville (BNA) to Bozeman Yellowstone (BZN) - 4.7 mi away @ 37175 ft, heading WNW at 495 mph. Spotted 10x before! [10:39:31 AM CDT] #A1BE79 #N211NV #A320 #ALLEGIANT #AAY345 #G4345 #ADSB #ADSBbot