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

🇺🇸 N983NK - Airbus A320 271NSL - Spirit Airlines NKS3703/NK3703 (IAH-BWI) - 5.0 mi away @ 39425 ft, heading NE at 580 mph. Spotted 6x before! [07:37:53 PM CDT] #ADB77F #N983NK #A20N #SPIRIT_WINGS #NKS3703 #NK3703 #ADSB #ADSBbot