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

🇺🇸 N128DU - Airbus A220 100 - Delta Air Lines DAL2039/DL2039, Dallas-Fort Worth (DFW) to Laguardia (LGA) - 4.3 mi away @ 32200 ft, heading NE at 544 mph. Spotted 16x before. [01:57:12 PM CST] #A071C8 #N128DU #BCS1 #DELTA #DAL2039 #DL2039 #ADSB #ADSBbot