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

🇺🇸 N684NK - Airbus A321 231SL - Spirit Airlines NKS2641/NK2641, Detroit Metro Wayne County (DTW) to George Bush Intcntl/Houston (IAH) - 4.1 mi away @ 33425 ft, heading SW at 468 mph. Spotted 10x before! [03:45:23 PM CDT] #A91349 #N684NK #A321 #SPIRIT_WINGS #NKS2641 #NK2641 #ADSB #ADSBbot