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

🇺🇸 N717NK - Airbus A321 271NXSL - Spirit Airlines NKS2591/NK2591, Baltimore/Washington Thurgood Marshall (BWI) to Los Angeles (LAX) - 4.4 mi away @ 38000 ft, heading W at 498 mph. Spotted 3x before! [06:26:25 AM CDT] #A99744 #N717NK #A21N #SPIRIT_WINGS #NKS2591 #NK2591 #ADSB #ADSBbot