ICAO: A54AAE
Owner: ALASKA AIRLINES
Flt: ASA306 N440AS B739 SEA-BOS-SEA
Time: 2025-12-19 16:16:19 EST
Min Alt: 12125 ft
Min Dist: 1.1 nm (47° NE)
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ICAO: A54AAE
Owner: ALASKA AIRLINES
Flt: ASA356 N440AS B739 SFO-BOS
Time: 2025-12-17 15:05:40 EST
Min Alt: 9200 ft
Min Dist: 0.99 nm (21° NNE)
Squawk: 4124

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ICAO: A54AAE
Owner: ALASKA AIRLINES
Flt: ASA1456 N440AS B739 BOS-SAN
Time: 2025-11-29 16:50:58 EST
Min Alt: 5200 ft
Min Dist: 6.6 nm (79° E)
Loudness: 0 dB
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ICAO: A54AAE
Owner: ALASKA AIRLINES
Flt: ASA358 N440AS B739 PDX-BOS
Time: 2025-11-29 15:14:59 EST
Min Alt: 9950 ft
Min Dist: 1.01 nm (27° NNE)
Loudness: 0 dB
dev adsb planefence by kx1t -•sdr-e•airplanes•flightaware•faa

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

🇺🇸 N440AS - Boeing 737NG 990ER/W - Alaska Airlines ASA315/AS315, St Louis Lambert (STL) to Seattle-Tacoma (SEA) - 3.4 mi away @ 13125 ft, heading NW at 420 mph. Spotted 5x before! [03:22:53 PM CDT] #A54AAE #N440AS #B739 #ALASKA #ASA315 #AS315 #TakingOff #Departure #ADSB #ADSBbot