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

🇺🇸 N909AN - Boeing 737NG 823/W - American Airlines AAL626/AA626, Queretaro Intercontinental (QRO) to Chicago O'Hare (ORD) - 4.3 mi away @ 35225 ft, heading NNE at 509 mph. Spotted 27x before. [10:37:24 AM CST] #AC90A8 #N909AN #B738 #AMERICAN #AAL626 #AA626 #ADSB #ADSBbot