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

🇺🇸 N912AN - Boeing 737NG 823/W - American Airlines AAL1209/AA1209, Chicago O'Hare (ORD) to Los Angeles (LAX) - 4.4 mi away @ 38225 ft, heading WSW at 440 mph. Spotted 25x before! [12:08:46 AM CDT] #AC9E26 #N912AN #B738 #AMERICAN #AAL1209 #AA1209 #ADSB #ADSBbot