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

🇨🇦 C-GYLY - AIRBUS A220-300 - SOCIT EN COMMANDITE AIRBUS CANADA AIRBUS CANADA LIMITED PARTNERSHIP ACA1033/AC1033 (YYZ-DFW) - 4.5 mi away @ 35825 ft, heading SW at 503 mph. Spotted once before. [11:29:11 PM CST] #C0853F #C_GYLY #BCS3 #ACA1033 #AC1033 #ADSB #ADSBbot

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

🇨🇦 C-GYLY - AIRBUS A220-300 - Air Canada ACA1071/AC1071, Montréal-Pierre Elliott Trudeau (YUL) to Dallas-Fort Worth (DFW) - 4.8 mi away @ 39050 ft, heading SW at 509 mph. Spotted for first time! [07:46:33 PM CDT] #C0853F #C_GYLY #BCS3 #AIR_CANADA #ACA1071 #AC1071 #ADSB #ADSBbot