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

🇺🇸 N731NK - Airbus A321 271NXSL - Spirit Airlines NKS3036/NK3036, Louis Armstrong New Orleans (MSY) to Chicago O'Hare (ORD) - 4.3 mi away @ 33525 ft, heading NNE at 490 mph. Spotted 6x before! [03:23:04 PM CST] #A9CFF8 #N731NK #A21N #SPIRIT_WINGS #NKS3036 #NK3036 #ADSB #ADSBbot