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

🇺🇸 N139SY - Embraer EMB-175 LR - United Express SKW5557/OO5557, Chicago O'Hare (ORD) to Will Rogers World (OKC) - 4.4 mi away @ 36025 ft, heading SSW at 486 mph. Spotted 27x before! [10:26:21 AM CDT] #A09E47 #N139SY #E75L #SKYWEST #SKW5557 #OO5557 #autopilot #ADSB #ADSBbot

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

🇺🇸 N134SY - Embraer EMB-175 LR - United Express SKW5557/OO5557, Chicago O'Hare (ORD) to Will Rogers World (OKC) - 4.2 mi away @ 35925 ft, heading SW at 484 mph. Spotted 29x before! [01:42:06 PM CDT] #A08BB4 #N134SY #E75L #SKYWEST #SKW5557 #OO5557 #autopilot #ADSB #ADSBbot

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

🇺🇸 N85379 - Embraer EMB-175 LL - United Express SKW5557/OO5557, Chicago O'Hare (ORD) to Will Rogers World (OKC) - 4.2 mi away @ 35200 ft, heading WSW at 423 mph. Spotted 7x before! [10:29:00 AM CDT] #ABB5EC #N85379 #E75L #SKYWEST #SKW5557 #OO5557 #autopilot #ADSB #ADSBbot