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

🇨🇦 C-GKYI - EMBRAER ERJ-190-400 - PORTER AIRLINES (CANADA) LIMITED POE771 - 4.6 mi away @ 37400 ft, heading SW at 488 mph. Spotted for first time! [01:33:38 PM CST] #C06189 #C_GKYI #E295 #POE771 #autopilot #ADSB #ADSBbot