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

ICAO: AB349C
Owner: ALASKA AIRLINES
Flt: ASA356 N821AK B38M SFO-BOS
Time: 2025-12-06 14:44:20 EST
Min Alt: 8675 ft
Min Dist: 1.01 nm (22° NNE)
dev adsb planefence by kx1t -•sdr-e•airplanes•flightaware•faa