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

🇺🇸 N673NK - Airbus A321 231SL - Spirit Airlines NKS540/NK540, Chicago O'Hare (ORD) to Dallas-Fort Worth (DFW) - 4.0 mi away @ 32500 ft, heading SW at 482 mph. Spotted 6x before! [03:28:22 PM CST] #A8E813 #N673NK #A321 #SPIRIT_WINGS #NKS540 #NK540 #ADSB #ADSBbot