AS442Alaska Airlines · SEA → PHL
live · 57m ago
Route confirmed Alaska Airlines

AS442 SeattleSEA · 09:40 PhiladelphiaPHL · 21:56

AS442 by Alaska Airlines flies from Seattle (SEA) to Philadelphia (PHL) for the Tue, Sep 1 departure.

Right nowEn route to Philadelphia
00:27

estimated arrival at PHL · local time · ~7h 05m from now

En routeAS442 · position estimated
SEASeattlePHLPhiladelphia
Estimated from the boardsarr 00:27

Board estimate · gate and arrival times. No receiver coverage over open ocean.

Typical arrival+151 minmedian over 1 operations

The route today

live boards
SEASeattleModerate riskSEA delay board →
PHLPhiladelphiaOn-time likelyPHL delay board →
SEA→PHLevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
37%Chance of 15+ min delay
0.8%Chance of cancellation
+12 minAvg hub delay right now

Conditions at SEA and PHL are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →

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 Philadelphia flights today

same route · Alaska Airlines
AS1657departs 21:27
AS371departs 21:27

If AS442 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Philadelphia on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →

How AS442 actually runs

Pro Flight Search has tracked every published board update for AS442 across the SEA and PHL 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 PHL.

The verdict above is that record speaking, so it reflects how AS442 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
09-01SEA 09:40PHL 21:56 00:27 (+151)

Board clocks recorded as SEA and PHL published them.

Planning around AS442? 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 — AS442 Seattle to Philadelphia on-time performance, measured from the SEA and PHL airport boards.

Canonical URL
https://proflightsearch.com/flight/AS442
How we measure this →