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

🇺🇸 N668NK - Airbus A321 231SL - Spirit Airlines NKS2831/NK2831, Detroit Metro Wayne County (DTW) to Austin-Bergstrom (AUS) - 4.1 mi away @ 33550 ft, heading SW at 499 mph. Spotted 12x before! [09:15:05 PM CDT] #A8D327 #N668NK #A321 #SPIRIT_WINGS #NKS2831 #NK2831 #ADSB #ADSBbot