AS309

DEN → SEA · Boeing 737-800 · Alaska Airlines

For travellers

Departure · Denver (DEN)

Gate A44

Scheduled 02 Oct 17:41 · Departed 02 Oct 17:38

Board status: Off block

Airborne since 02 Oct 17:42 (ADS-B)

Arrival · Seattle (SEA)

Gate C3

Scheduled 02 Oct 19:41 · Estimated 02 Oct 19:23 · early

Board status: Landed

Landed 02 Oct 19:33 (ADS-B)

Board data from den, sea, updated 119 min ago; times local to each airport.

Flight

Status

Completed

Arrival confirmed via

ADS-B (callsign change)

Departure

Denver International Airport (DEN) — Denver, United States

Scheduled departure

2026-10-02 23:41 UTC

Departed

2026-10-02 23:42 UTC

Arrival

Seattle Tacoma International Airport (SEA) — Seattle, United States

Scheduled arrival

2026-10-03 02:41 UTC

Estimated arrival

2026-10-03 02:23 UTC

Distance flown

1728 km

Straight-line distance

1645 km

Approach distance

79 km

Aircraft

Registration

N535AS

Type

Boeing 737-800

Seats

163 total (16 Business, 147 Economy)

CO2 (EMEP est., total)

40.1 t (378 kg/pax Business, 231 kg/pax Economy)

Altitude & speed

Max altitude

36,025 ft

Max ground speed

435 kt

Tracked

2h 51m · 1,723 km

Altitude (ft, max 36,025)

Ground speed (kt, max 435)

Altitude (ft, max 36,025)

Ground speed (kt, max 435)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

Route map

Airline

Alaska Airlines (ASA)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-10-02 23:42 UTC	ASA309	DEN → SEA Denver → Seattle	N535AS	Boeing 737-800	Completed	1728 km
2026-10-01 23:57 UTC	ASA309	DEN → SEA Denver → Seattle	N806AK	Boeing 737 MAX 8	Completed	1715 km
2026-09-30 23:42 UTC	ASA309	DEN → SEA Denver → Seattle	N954AK	Boeing 737 MAX 9	Completed	1803 km
2026-09-30 00:02 UTC	ASA309	DEN → SEA Denver → Seattle	N265AK	Boeing 737-900	Completed	1792 km

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