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

🇨🇦 C-GFVN - Boeing 737MAX 8 - WestJet SWG452/WG452, Calgary (YYC) to Punta Cana (PUJ) - 6.5 mi away @ 37300 ft, heading SE at 582 mph. Spotted for first time! [11:15:23 AM CDT] #C0540C #C_GFVN #B38M #WESTJET #SWG452 #WG452 #ADSB #ADSBbot