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

🇺🇸 N746NK - AIRBUS A321neo - ALC A321 92024 LLC NKS1157/NK1157, Chicago O'Hare (ORD) to George Bush Intcntl/Houston (IAH) - 4.2 mi away @ 35475 ft, heading SW at 404 mph. Spotted once before. [03:11:08 PM CST] #AA0A0A #N746NK #A21N #NKS1157 #NK1157 #ADSB #ADSBbot