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

🇺🇸 N559AS - Boeing 737NG 890/W - Alaska Airlines ASA201/AS201, Washington Dulles (IAD) to San Diego (SAN) - 4.3 mi away @ 37275 ft, heading W at 430 mph. Spotted 6x before. [07:44:32 PM CST] #A720EB #N559AS #B738 #ALASKA #ASA201 #AS201 #ADSB #ADSBbot

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

🇺🇸 N821AK - Alaska Airlines ASA201/AS201, Washington Dulles (IAD) to San Diego (SAN) - 3.9 mi away @ 33600 ft, heading W at 396 mph. Spotted for first time! [06:19:24 PM CST] #AB349C #N821AK #B38M #ALASKA #ASA201 #AS201 #ADSB #ADSBbot