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

🇺🇸 N473UP - Boeing 757 24APF - United Parcel Service UPS2981/5X2981, Boeing Field/King County (BFI) to Louisville Muhammad Ali (SDF) - 4.6 mi away @ 37900 ft, heading ESE at 607 mph. Spotted 5x before! [10:40:55 AM CDT] #A5CE0F #N473UP #B752 #UPS #UPS2981 #5X2981 #ADSB #ADSBbot