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

🇨🇦 C-GHQY - Boeing 787 8 - Air Canada ACA1349/AC1349, Toronto Pearson (YYZ) to Licenciado Gustavo Diaz Ordaz (PVR) - 22.9 mi away @ 39750 ft, heading SW at 509 mph. Spotted once before! [09:41:19 AM CST] #C058DD #C_GHQY #B788 #AIR_CANADA #ACA1349 #AC1349 #autopilot #ADSB #ADSBbot