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

🇨🇦 C-FZRM - Boeing 737NG 800/W - WestJet WJA2537/WS2537, Cancun (CUN) to Winnipeg James Armstrong Richardson (YWG) - 4.4 mi away @ 35675 ft, heading NNW at 498 mph. Spotted 5x before! [04:54:10 PM CST] #C043CB #C_FZRM #B738 #WESTJET #WJA2537 #WS2537 #ADSB #ADSBbot