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

🇺🇸 N389FR - Airbus A320 251NSL - Frontier Airlines FFT1887/F91887, Chicago Midway (MDW) to Dallas-Fort Worth (DFW) - 4.5 mi away @ 38375 ft, heading SW at 470 mph. Spotted 22x before. [08:47:09 AM CST] #A47D46 #N389FR #A20N #FRONTIER_FLIGHT #FFT1887 #F91887 #ADSB #ADSBbot

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

🇺🇸 N389FR - Airbus A320 251NSL - Frontier Airlines FFT1398/F91398, George Bush Intcntl/Houston (IAH) to Chicago Midway (MDW) - 4.5 mi away @ 37550 ft, heading NNE at 474 mph. Spotted 21x before. [09:38:04 PM CST] #A47D46 #N389FR #A20N #FRONTIER_FLIGHT #FFT1398 #F91398 #ADSB #ADSBbot