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

🇺🇸 N838SY - Boeing 737NG 86N/W - Sun Country Airlines SCX417/SY417, Minneapolis-St Paul/Wold-Chamberlain (MSP) to Miami (MIA) - 4.5 mi away @ 37200 ft, heading SSE at 525 mph. Spotted 15x before. [04:12:56 PM CST] #AB77B9 #N838SY #B738 #SUN_COUNTRY #SCX417 #SY417 #ADSB #ADSBbot