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

🇺🇸 N729NK - Airbus A321 271NXSL - Spirit Airlines NKS824/NK824, George Bush Intcntl/Houston (IAH) to Detroit Metro Wayne County (DTW) - 4.5 mi away @ 36100 ft, heading NE at 575 mph. Spotted once before! [06:39:34 PM CDT] #A9C631 #N729NK #A21N #SPIRIT_WINGS #NKS824 #NK824 #ADSB #ADSBbot

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

🇺🇸 N706NK - Airbus A321 271NXSL - Spirit Airlines NKS824/NK824, George Bush Intcntl/Houston (IAH) to Detroit Metro Wayne County (DTW) - 4.2 mi away @ 34725 ft, heading ENE at 583 mph. Spotted 10x before! [07:57:27 PM CDT] #A96C0E #N706NK #A21N #SPIRIT_WINGS #NKS824 #NK824 #ADSB #ADSBbot