ICAO: A57D52
Owner: ALASKAAIRLINES
Flt: ASA306 N453AS B739 SEA-BOS-#SEA
Time: 2026-03-09 15:43:29 EDT
Min Alt: 8875 ft
Min Dist: 2.6 nm (3deg N)
Squawk: 6676
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ICAO: A57D52
Owner: ALASKAAIRLINES
Flt: ASA1319 N453AS B739 BOS-PDX
Time: 2026-03-01 16:49:48 EST
Min Alt: 2650 ft
Min Dist: 0.3 mi (43deg NE)

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ICAO: A57D52
Owner: ALASKAAIRLINES
Flt: ASA358 N453AS B739 PDX-BOS
Time: 2026-03-01 14:54:54 EST
Min Alt: 9950 ft
Min Dist: 2.2 nm (21deg NNE)
Squawk: 0535
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Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N453AS - BOEING 737-990ER - Alaska Airlines ASA618/AS618 (SEA-STL-SEA) - 3.3 mi away @ 13100 ft, heading NW at 406 mph. Spotted 5x before. [03:09:52 PM CST] #A57D52 #N453AS #B739 #ALASKA #ASA618 #AS618 #TakingOff #ADSB #ADSBbot

ICAO: A57D52
Owner: ALASKA AIRLINES
Flt: ASA436 N453AS B739 PDX-BOS
Time: 2025-12-29 05:39:32 EST
Min Alt: 8675 ft
Min Dist: 0.99 nm (22° NNE)
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ICAO: A57D52
Owner: ALASKA AIRLINES
Flt: ASA356 N453AS B739 SFO-BOS
Time: 2025-12-28 15:32:07 EST
Min Alt: 8250 ft
Min Dist: 1.01 nm (27° NNE)
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Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N453AS - Boeing 737NG 990ER/W - Alaska Airlines ASA30/AS30, San Francisco (SFO) to John F Kennedy (JFK) - 4.8 mi away @ 36950 ft, heading ENE at 515 mph. Spotted 4x before! [11:40:41 AM CDT] #A57D52 #N453AS #B739 #ALASKA #ASA30 #AS30 #ADSB #ADSBbot