AS371Alaska Airlines · SEA → PHL
live · 19m ago
Route confirmed Alaska Airlines

AS371 SeattleSEA · 21:28 PhiladelphiaPHL · 05:32

AS371 by Alaska Airlines flies from Seattle (SEA) to Philadelphia (PHL) for the Wed, Nov 4 departure.

Right nowOn time · gate D8
21:28

departs SEA · on schedule

Typical arrival−5 minmedian over 5 operations

Where the minutes go

last 5 operations · gate push → arrival
0+30+60+90 min
11-04
−1 arrival
11-03
−1 arrival
11-02
−10 arrival
11-01
−5 arrival
10-30
−16 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 −5 min · 0 cancelled · 5 operations tracked

The route today

live boards
SEASeattleHigh 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
35%Chance of 15+ min delay
0.8%Chance of cancellation
+7 minTypical airport delay in this weather

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. 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 at Seattle

Forecast

Thu 5 Nov, local date

High14°Clikely 12°C to 15°C
Low9°Clikely 7°C to 10°C
  • 73% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Philadelphia

Forecast

Thu 5 Nov, local date

High22°Clikely 20°C to 24°C
Low17°Clikely 15°C to 19°C
  • 85% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · 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 Philadelphia flights today

same route · Alaska Airlines
AS442departs 09:19

If AS371 is cancelled, this is the other Alaska Airlines nonstop flight from Seattle to Philadelphia 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 AS371 actually runs

Pro Flight Search has tracked every published board update for AS371 across the SEA and PHL boards: schedule changes, gate pushes and actual clocks. Usually lands ~5 min early. Based on 5 confirmed landings · 5/5 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how AS371 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-04SEA 21:28PHL 05:32 05:31 (−1)
11-03SEA 21:28PHL 05:32 05:31 (−1)
11-02SEA 21:28PHL 05:32 05:22 (−10)
11-01SEA 21:28PHL 05:32 05:27 (−5)
10-30SEA PHL 05:41 05:25 (−16)

Aircraft

Recent tails: N494AS, N264AK, N292AK, N705AL.

Board clocks recorded as SEA and PHL published them.

Planning around AS371? 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: AS371 Seattle to Philadelphia on-time performance, measured from the SEA and PHL airport boards.

Canonical URL
https://proflightsearch.com/flight/AS371
How we measure this →