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

🇺🇸 N456UP - Boeing 757 24APF - United Parcel Service UPS5774/5X5774 - 5.9 mi away @ 39900 ft, heading SSW at 565 mph. Spotted 3x before! [03:48:52 PM CDT] #A58A36 #N456UP #B752 #UPS #UPS5774 #5X5774 #ADSB #ADSBbot

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

🇺🇸 N456UP - Boeing 757 24APF - United Parcel Service UPS5774/5X5774, Chicago/Rockford (RFD) to George Bush Intcntl/Houston (IAH) - 4.4 mi away @ 36400 ft, heading SSW at 523 mph. Spotted 2x before! [04:24:20 PM CST] #A58A36 #N456UP #B752 #UPS #UPS5774 #5X5774 #ADSB #ADSBbot