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

🇺🇸 N507DZ - Airbus A321 271NXSL - Delta Air Lines DAL807/DL807 (JFK-LAS-JFK) - 5.9 mi away @ 30875 ft, heading WSW at 477 mph. Spotted 3x before! [12:50:03 PM CST] #A65454 #N507DZ #A21N #DELTA #DAL807 #DL807 #ADSB #ADSBbot