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

🇺🇸 N726NK - Airbus A321 271NXSL - Spirit Airlines NKS2688/NK2688, George Bush Intcntl/Houston (IAH) to Newark Liberty (EWR) - 4.8 mi away @ 36575 ft, heading NE at 534 mph. Spotted 3x before! [12:39:04 PM CDT] #A9BB0C #N726NK #A21N #SPIRIT_WINGS #NKS2688 #NK2688 #ADSB #ADSBbot