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

🇺🇸 N828SY - Boeing 737NG 8F2/W - Sun Country Airlines SCX1816/SY1816 - 4.5 mi away @ 38000 ft, heading NNW at 467 mph. Spotted 8x before! [11:36:48 PM CDT] #AB503A #N828SY #B738 #SUN_COUNTRY #SCX1816 #SY1816 #ADSB #ADSBbot