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

🇺🇸 N189NV - Airbus A320 214SL - Allegiant Air AAY2010/G42010, Denver (DEN) to Cincinnati/Northern Kentucky (CVG) - 4.8 mi away @ 38450 ft, heading ESE at 603 mph. Spotted for first time! [10:38:50 AM CDT] #A1635B #N189NV #A320 #ALLEGIANT #AAY2010 #G42010 #ADSB #ADSBbot