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

🇺🇸 N138SY - Embraer EMB-175 LR - United Express SKW5439/OO5439, Chicago O'Hare (ORD) to Louis Armstrong New Orleans (MSY) - 14.2 mi away @ 35150 ft, heading S at 513 mph. Spotted 27x before! [08:24:40 AM CDT] #A09A90 #N138SY #E75L #SKYWEST #SKW5439 #OO5439 #autopilot #ADSB #ADSBbot