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

🇺🇸 N726NK - Airbus A321 271NXSL - Spirit Airlines NKS569/NK569, Chicago O'Hare (ORD) to George Bush Intcntl/Houston (IAH) - 4.2 mi away @ 33950 ft, heading SW at 364 mph. Spotted for first time! [09:47:04 AM CDT] #A9BB0C #N726NK #A21N #SPIRIT_WINGS #NKS569 #NK569 #ADSB #ADSBbot