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

🇺🇸 N466UP - Boeing 757 24APF - United Parcel Service UPS5904/5X5904, Louisville Muhammad Ali (SDF) to Ontario (ONT) - 4.6 mi away @ 37850 ft, heading W at 451 mph. Spotted 7x before! [01:57:19 PM CST] #A5B1B5 #N466UP #B752 #UPS #UPS5904 #5X5904 #ADSB #ADSBbot