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

🇺🇸 N702NK - Airbus A321 271NXSL - Spirit Airlines NKS2144/NK2144, Harry Reid (LAS) to Detroit Metro Wayne County (DTW) - 4.4 mi away @ 37100 ft, heading ENE at 551 mph. Spotted 7x before! [03:40:29 AM CDT] #A95D32 #N702NK #A21N #SPIRIT_WINGS #NKS2144 #NK2144 #ADSB #ADSBbot