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

🇺🇸 N668FR - AIRBUS A321-271NX - Frontier Airlines FFT2018/F92018, Harry Reid (LAS) to St Louis Lambert (STL) - 3.2 mi away @ 7325 ft, heading E at 311 mph. Spotted once before. [07:56:41 PM CST] #A8D27E #N668FR #A21N #FRONTIER_FLIGHT #FFT2018 #F92018 #Landing #Arrival #ADSB #ADSBbot

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

🇺🇸 N668FR - AIRBUS A321-271NX - UMB BANK NA TRUSTEE FFT4240/F94240, Phoenix Sky Harbor (PHX) to Cincinnati/Northern Kentucky (CVG) - 4.5 mi away @ 36775 ft, heading ESE at 500 mph. Spotted for first time! [02:43:17 PM CDT] #A8D27E #N668FR #A21N #FFT4240 #F94240 #ADSB #ADSBbot