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

🇨🇦 C-FKIW - Boeing 737NG 7CT/W - WestJet WJA1590/WS1590, Calgary (YYC) to Hartsfield - Jackson Atlanta (ATL) - 4.5 mi away @ 37150 ft, heading SE at 610 mph. Spotted for first time! [12:51:24 PM CST] #C01B4F #C_FKIW #B737 #WESTJET #WJA1590 #WS1590 #ADSB #ADSBbot