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

🇨🇦 C-FRAX - Boeing 737MAX 8 - WestJet WJA2137/WS2137, Licenciado Gustavo Diaz Ordaz (PVR) to Toronto Pearson (YYZ) - 4.0 mi away @ 36075 ft, heading NE at 642 mph. Spotted 4x before! [05:41:57 PM CDT] #C02CFC #C_FRAX #B38M #WESTJET #WJA2137 #WS2137 #ADSB #ADSBbot

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

🇨🇦 C-GZWS - Boeing 737NG 8CT/W - WestJet WJA2137/WS2137, Licenciado Gustavo Diaz Ordaz (PVR) to Toronto Pearson (YYZ) - 4.5 mi away @ 34925 ft, heading NE at 566 mph. Spotted for first time! [06:42:53 PM CST] #C088FB #C_GZWS #B738 #WESTJET #WJA2137 #WS2137 #ADSB #ADSBbot

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

🇨🇦 C-GXRW - Boeing 737NG 8CT/W - WestJet WJA2137/WS2137, Licenciado Gustavo Diaz Ordaz (PVR) to Toronto Pearson (YYZ) - 4.8 mi away @ 37600 ft, heading NE at 556 mph. Spotted 2x before! [04:21:59 PM CST] #C08335 #C_GXRW #B738 #WESTJET #WJA2137 #WS2137 #ADSB #ADSBbot

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

🇨🇦 C-GRTB - Boeing 737NG 800/W - WestJet WJA2137/WS2137, Licenciado Gustavo Diaz Ordaz (PVR) to Toronto Pearson (YYZ) - 4.2 mi away @ 36125 ft, heading NE at 574 mph. Spotted once before! [04:36:26 PM CST] #C0737C #C_GRTB #B738 #WESTJET #WJA2137 #WS2137 #ADSB #ADSBbot