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

🇺🇸 N683NK - Airbus A321 231SL - Spirit Airlines NNKS898, Chicago O'Hare (ORD) to Dallas-Fort Worth (DFW) - 3.9 mi away @ 28175 ft, heading SW at 511 mph. Spotted 12x before! [08:07:25 AM CST] #A90F92 #N683NK #A321 #SPIRIT_WINGS #NNKS898 #ADSB #ADSBbot