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

🇺🇸 N628SY - EMBRAER S A ERJ 170-200 LL - Sky West Aviation SKW5300/OO5300, Chicago O'Hare (ORD) to San Antonio (SAT) - 4.0 mi away @ 33375 ft, heading SW at 518 mph. Spotted 2x before! [01:54:47 PM CDT] #A8359C #N628SY #E75L #SKYWEST #SKW5300 #OO5300 #autopilot #ADSB #ADSBbot

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

🇺🇸 N628SY - EMBRAER S A ERJ 170-200 LL - SKYWEST AIRLINES INC SKW5300/OO5300, Chicago O'Hare (ORD) to San Antonio (SAT) - 4.2 mi away @ 35375 ft, heading SW at 455 mph. Spotted once before! [01:59:40 PM CDT] #A8359C #N628SY #E75L #SKW5300 #OO5300 #autopilot #ADSB #ADSBbot