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

🇺🇸 N645FR - Airbus A321 271NXSL - Frontier Airlines FFT1472/F91472, Phoenix Sky Harbor (PHX) to Cleveland-Hopkins (CLE) - 4.6 mi away @ 37400 ft, heading ENE at 562 mph. Spotted 4x before! [09:21:41 PM CDT] #A8785B #N645FR #A21N #FRONTIER_FLIGHT #FFT1472 #F91472 #ADSB #ADSBbot