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 DAL2098/DL2098, Austin-Bergstrom (AUS) to General Edward Lawrence Logan (BOS) - 4.5 mi away @ 36825 ft, heading ENE at 695 mph. Spotted 12x before! [09:00:01 AM CST] #A057C7 #N121DU #BCS1 #DELTA #DAL2098 #DL2098 #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 DAL2098/DL2098, Austin-Bergstrom (AUS) to General Edward Lawrence Logan (BOS) - 4.6 mi away @ 36775 ft, heading NE at 615 mph. Spotted 20x before! [08:54:54 AM CST] #A0757F #N129DU #BCS1 #DELTA #DAL2098 #DL2098 #ADSB #ADSBbot