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

🇨🇦 C-FSJJ - Boeing 737MAX 8 - Air Canada ACA977/AC977, Toronto Pearson (YYZ) to Los Cabos (SJD) - 4.1 mi away @ 35100 ft, heading WSW at 394 mph. Spotted once before. [10:56:25 AM CST] #C0307C #C_FSJJ #B38M #AIR_CANADA #ACA977 #AC977 #ADSB #ADSBbot