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

🇺🇸 N13720 - Boeing 737NG 724/W - United Airlines UAL1686/UA1686, Newark Liberty (EWR) to Dallas-Fort Worth (DFW) - 4.1 mi away @ 32550 ft, heading SW at 468 mph. Spotted 18x before! [08:10:55 AM CST] #A097E9 #N13720 #B737 #UNITED #UAL1686 #UA1686 #ADSB #ADSBbot