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

🇨🇦 C-FSIP - Boeing 737MAX 8 - Air Canada ACA977/AC977, Toronto Pearson (YYZ) to Los Cabos (SJD) - 3.8 mi away @ 33675 ft, heading WSW at 398 mph. Spotted 2x before. [11:05:23 AM CST] #C03068 #C_FSIP #B38M #AIR_CANADA #ACA977 #AC977 #ADSB #ADSBbot

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

🇨🇦 C-FSIP - Boeing 737MAX 8 - Air Canada ACA999/AC999, Montréal-Pierre Elliott Trudeau (YUL) to Licenciado Gustavo Diaz Ordaz (PVR) - 3.9 mi away @ 34025 ft, heading SW at 521 mph. Spotted once before! [12:09:06 PM CST] #C03068 #C_FSIP #B38M #AIR_CANADA #ACA999 #AC999 #ADSB #ADSBbot