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

🇺🇸 N574DT - Airbus A321 271NXSL - Delta Air Lines DAL552/DL552 (JFK-SAN-JFK) - 14.8 mi away @ 33850 ft, heading WSW at 539 mph. Spotted 2x before! [10:23:43 AM CDT] #A75DA2 #N574DT #A21N #DELTA #DAL552 #DL552 #ADSB #ADSBbot