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

🇺🇸 N285AK - Boeing 737NG 900ER/W - Alaska Airlines ASA349/AS349, Baltimore/Washington Thurgood Marshall (BWI) to Seattle-Tacoma (SEA) - 4.3 mi away @ 35300 ft, heading W at 465 mph. Spotted 8x before. [08:05:11 AM CST] #A2E098 #N285AK #B739 #ALASKA #ASA349 #AS349 #ADSB #ADSBbot