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

🇺🇸 N27515 - Boeing 737MAX 9 - United Airlines UAL1469/UA1469, Washington Dulles (IAD) to Los Angeles (LAX) - 6.1 mi away @ 33600 ft, heading WSW at 427 mph. Spotted 3x before! [07:07:13 AM CST] #A2BBA8 #N27515 #B39M #UNITED #UAL1469 #UA1469 #ADSB #ADSBbot