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

🇺🇸 N378FR - Airbus A320 251NSL - Frontier Airlines FFT1441/F91441, Hartsfield - Jackson Atlanta (ATL) to Chicago O'Hare (ORD) - 4.7 mi away @ 38450 ft, heading NNE at 490 mph. Spotted 16x before! [11:06:43 AM CDT] #A45210 #N378FR #A20N #FRONTIER_FLIGHT #FFT1441 #F91441 #ADSB #ADSBbot