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

🇨🇦 C-GMXH - Boeing 737MAX 8 - Sunwing Airlines SWG277/WG277, Montréal-Pierre Elliott Trudeau (YUL) to General Rafael Buelna (MZT) - 4.5 mi away @ 33950 ft, heading SW at 501 mph. Spotted once before! [09:46:38 AM CST] #C066B6 #C_GMXH #B38M #SUNWING #SWG277 #WG277 #ADSB #ADSBbot

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

🇨🇦 C-FMXG - Boeing 737MAX 8 - Sunwing Airlines SWG277/WG277, Montréal-Pierre Elliott Trudeau (YUL) to General Rafael Buelna (MZT) - 4.0 mi away @ 33750 ft, heading SW at 381 mph. Spotted once before! [09:42:27 AM CST] #C0220D #C_FMXG #B38M #SUNWING #SWG277 #WG277 #ADSB #ADSBbot