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

🇺🇸 N706AL - Boeing 737MAX 9 - Alaska Airlines ASA506/AS506, San Diego (SAN) to Washington Dulles (IAD) - 4.8 mi away @ 36175 ft, heading E at 607 mph. Spotted 7x before. [02:49:08 PM CST] #A96AE3 #N706AL #B39M #ALASKA #ASA506 #AS506 #ADSB #ADSBbot