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

🇺🇸 N389FR - Airbus A320 251NSL - Frontier Airlines FFT3242/F93242, Dallas-Fort Worth (DFW) to Chicago O'Hare (ORD) - 4.9 mi away @ 38950 ft, heading NNE at 552 mph. Spotted 18x before! [12:22:23 AM CDT] #A47D46 #N389FR #A20N #FRONTIER_FLIGHT #FFT3242 #F93242 #ADSB #ADSBbot