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

🇺🇸 N904NK - Airbus A320 271NSL - Spirit Airlines NKS8804/NK8804, Detroit Metro Wayne County (DTW) to Dallas-Fort Worth (DFW) - 4.7 mi away @ 40100 ft, heading SW at 542 mph. Spotted 9x before! [11:17:41 AM CDT] #AC7F3E #N904NK #A20N #SPIRIT_WINGS #NKS8804 #NK8804 #ADSB #ADSBbot