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

🇺🇸 N17752 - Boeing 737NG 71Q/W - United Airlines UAL1748/UA1748 (SRQ-ORD-DEN) - 4.9 mi away @ 40725 ft, heading N at 545 mph. Spotted 21x before! [05:08:52 PM CDT] #A13650 #N17752 #B737 #UNITED #UAL1748 #UA1748 #ADSB #ADSBbot