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

🇺🇸 N361DN - Airbus A321 211SL - Delta Air Lines DAL733/DL733 (MSP-FLL-MSP) - 4.0 mi away @ 35100 ft, heading WNW at 495 mph. Spotted 2x before. [11:37:51 PM CDT] #A4105B #N361DN #A321 #DELTA #DAL733 #DL733 #ADSB #ADSBbot