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

🇺🇸 N114DU - Airbus A220 100 - Delta Air Lines DAL541/DL541 (BOS-AUS-BOS) - 4.1 mi away @ 36900 ft, heading NE at 703 mph. Spotted 24x before! [01:42:57 PM CST] #A03B6D #N114DU #BCS1 #DELTA #DAL541 #DL541 #ADSB #ADSBbot

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

🇺🇸 N121DU - Airbus A220 100 - Delta Air Lines DAL541/DL541 (BOS-AUS-BOS) - 4.2 mi away @ 37000 ft, heading NE at 657 mph. Spotted 11x before! [01:52:47 PM CST] #A057C7 #N121DU #BCS1 #DELTA #DAL541 #DL541 #ADSB #ADSBbot

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

🇺🇸 N129DU - Airbus A220 100 - Delta Air Lines DAL541/DL541 (BOS-AUS-BOS) - 4.3 mi away @ 36700 ft, heading NE at 602 mph. Spotted 21x before! [07:46:40 PM CST] #A0757F #N129DU #BCS1 #DELTA #DAL541 #DL541 #ADSB #ADSBbot