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

🇺🇸 N278AK - Boeing 737NG 900ER/W - Alaska Airlines ASA355/AS355, Hartsfield - Jackson Atlanta (ATL) to San Diego (SAN) - 3.8 mi away @ 31650 ft, heading W at 472 mph. Spotted 7x before! [06:07:55 PM CST] #A2C43E #N278AK #B739 #ALASKA #ASA355 #AS355 #ADSB #ADSBbot