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

🇺🇸 N87303 - Embraer EMB-175 LR - United Express ASH6353/YV6353, Detroit Metro Wayne County (DTW) to George Bush Intcntl/Houston (IAH) - 4.0 mi away @ 33175 ft, heading WSW at 401 mph. Spotted 25x before! [06:39:44 PM CDT] #AC03EF #N87303 #E75L #AIR_SHUTTLE #ASH6353 #YV6353 #autopilot #ADSB #ADSBbot

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

🇺🇸 N89321 - Embraer EMB-175 LR - United Express ASH6353/YV6353, Detroit Metro Wayne County (DTW) to George Bush Intcntl/Houston (IAH) - 4.2 mi away @ 35850 ft, heading SSW at 510 mph. Spotted 23x before! [05:13:36 PM CDT] #AC5331 #N89321 #E75L #AIR_SHUTTLE #ASH6353 #YV6353 #autopilot #ADSB #ADSBbot