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

🇨🇦 C-FBWS - Boeing 737MAX 8 - WestJet WJA1593/WS1593, Hartsfield - Jackson Atlanta (ATL) to Calgary (YYC) - 4.2 mi away @ 37150 ft, heading NW at 510 mph. Spotted 2x before! [08:59:30 AM CDT] #C004F3 #C_FBWS #B38M #WESTJET #WJA1593 #WS1593 #ADSB #ADSBbot

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

🇨🇦 C-FLSF - Boeing 737NG 8CT/W - WestJet WJA1593/WS1593, Hartsfield - Jackson Atlanta (ATL) to Calgary (YYC) - 4.3 mi away @ 36975 ft, heading NW at 494 mph. Spotted for first time! [09:00:30 AM CDT] #C01EE6 #C_FLSF #B738 #WESTJET #WJA1593 #WS1593 #ADSB #ADSBbot