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

🇺🇸 N825SY - Boeing 737NG 8F2/W - Sun Country Airlines SCX8142/SY8142 - 3.2 mi away @ 17250 ft, heading NW at 398 mph. Spotted 10x before! [12:21:50 PM CDT] #AB4515 #N825SY #B738 #SUN_COUNTRY #SCX8142 #SY8142 #ADSB #ADSBbot