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

🇺🇸 N740NK - AIRBUS S A S A321-271NX - ALC A321 62024 LLC NKS1369/NK1369, Orlando (MCO) to Chicago O'Hare (ORD) - 4.6 mi away @ 37525 ft, heading NNE at 563 mph. Spotted 2x before! [02:20:35 PM CDT] #A9F3C0 #N740NK #A21N #NKS1369 #NK1369 #ADSB #ADSBbot