AS370 PhiladelphiaPHL · 07:02 SeattleSEA · 10:08
AS370 by Alaska Airlines flies from Philadelphia (PHL) to Seattle (SEA) for the Sun, Nov 1 departure.
en route from PHL to SEA
board checked 14m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 07:19 · typical taxi-out at PHL ≈ 7 min. No receiver coverage over open ocean.
Where the minutes go
last 7 operations · gate push → arrivalThe 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 operation0 cancelled · 8 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at PHL and SEA 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
ForecastPhiladelphia to Seattle with Alaska Airlines · Mon 2 Nov, local date
- Chance a departure leaves 60+ min late
- 3.8%0.6× usual
Forecast weather: 34% chance of fog at Seattle
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 2 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 departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Philadelphia to Seattle flights today
same route · Alaska AirlinesIf AS370 is cancelled, these are the other Alaska Airlines nonstop flights from Philadelphia to Seattle on the same day, with scheduled departure times in PHL 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 AS370 actually runs
Pro Flight Search has tracked every published board update for AS370 across the PHL and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs ~5 min early. Based on 8 confirmed departures · 7/8 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AS370 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N972AK, N247AK, N588AS, N738AL.
Board clocks recorded as PHL and SEA published them.
Planning around AS370? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: AS370 Philadelphia to Seattle on-time performance, measured from the PHL and SEA airport boards.
https://proflightsearch.com/flight/AS370
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