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

🇺🇸 N703NK - Airbus A321 271NXSL - Spirit Airlines NKS1779/NK1779, Baltimore/Washington Thurgood Marshall (BWI) to Harry Reid (LAS) - 4.2 mi away @ 35375 ft, heading W at 532 mph. Spotted 6x before! [08:17:12 PM CDT] #A960E9 #N703NK #A21N #SPIRIT_WINGS #NKS1779 #NK1779 #ADSB #ADSBbot