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

🇺🇸 N816SY - Boeing 737NG 8Q8/W - Sun Country Airlines SCX8709/SY8709, William P Hobby (HOU) to St Louis Lambert (STL) - 4.8 mi away @ 8100 ft, heading ESE at 304 mph. Spotted 5x before! [03:58:13 PM CDT] #AB214D #N816SY #B738 #SUN_COUNTRY #SCX8709 #SY8709 #Landing #Arrival #ADSB #ADSBbot