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

🇺🇸 N13718 - Boeing 737NG 724/W - United Airlines UAL1407/UA1407 (IAH-DFW-EWR) - 5.7 mi away @ 39600 ft, heading NE at 617 mph. Spotted 28x before! [02:24:24 PM CST] #A097CE #N13718 #B737 #UNITED #UAL1407 #UA1407 #ADSB #ADSBbot