AS821Alaska Airlines · SEA → HNL
live · 4m ago
Route confirmed Alaska Airlines

AS821 SeattleSEA · 13:00 HonoluluHNL

AS821 by Alaska Airlines flies from Seattle (SEA) to Honolulu (HNL) for the Sun, Nov 1 departure.

Right nowIn the air to Honolulu
16:26

estimated arrival at HNL · local time · ~4h 55m from now

LivePosition · updated 4m ago
HNL2,555 mi · ~4h 55m leftSEA
30,400 ftAltitudeclimbing
528 mphSpeed459 kt
232°Direction

Live position · flown path, last 22 min

Typical arrival−18 minmedian over 6 operations

Where the minutes go

last 6 operations · gate push → arrival
0+67+133+200 min
11-01
−18 arrival
10-28
+200 arrival
10-27
−24 arrival
10-26
−28 arrival
10-25
−18 arrival
10-24
+9 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −18 min · 0 cancelled · 6 operations tracked

The route today

live boards
SEASeattleOn-time likelySEA delay board →
HNLHonoluluModerate riskHNL delay board →
SEA→HNLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
31%Chance of 15+ min delay
0.6%Chance of cancellation
+7 minTypical airport delay in this weather

Conditions at SEA and HNL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow on this route

Forecast

Seattle to Honolulu with Alaska Airlines · Mon 2 Nov, local date

Outlook: elevated
Chance a departure is cancelled
2.7%0.7× usual
Chance a departure leaves 60+ min late
22%1.4× usual

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 1 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Seattle to Honolulu flights today

same route · Alaska Airlines
AS9285departs 01:00
AS9288departs 01:45
AS121departs 07:45
AS853departs 09:00
AS626departs 09:05
AS899departs 10:05

If AS821 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Honolulu on the same day, with scheduled departure times in SEA local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How AS821 actually runs

Pro Flight Search has tracked every published board update for AS821 across the SEA and HNL boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at SEA and HNL.

The verdict above is that record speaking, so it reflects how AS821 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-01SEA 13:00HNL 16:24 16:06 (−18)
10-28SEA 13:00HNL 16:24 19:44 (+200)
10-27SEA 13:00HNL 16:24 16:00 (−24)
10-26SEA 13:00HNL 16:24 15:56 (−28)
10-25SEA 13:00HNL 16:24 16:06 (−18)
10-24SEA 07:00HNL 10:20 10:29 (+9)

Board clocks recorded as SEA and HNL published them.

Planning around AS821? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: AS821 Seattle to Honolulu on-time performance, measured from the SEA and HNL airport boards.

Canonical URL
https://proflightsearch.com/flight/AS821
How we measure this →