AS9940Alaska Airlines · BFI → SEA
live · 21m ago
Route confirmed Alaska Airlines

AS9940 SeattleBFI SeattleSEA

AS9940 by Alaska Airlines flies from Seattle (BFI) to Seattle (SEA).

Right nowNext departure Friday Operates Fri
11:30

scheduled from BFI

The route today

live boards
BFISeattleOn-time likelyBFI delay board →
SEASeattleModerate riskSEA delay board →
BFI→SEAevery carrier, schedules and on-time historyRoute intelligence →

Tomorrow at Seattle

Forecast

Wed 4 Nov, local date

High14°Clikely 12°C to 15°C
Low6°Clikely 4°C to 7°C
  • 32% chance of fog
  • 86% 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.

How AS9940 actually runs

Pro Flight Search has tracked every published board update for AS9940 across the BFI and SEA boards: schedule changes, gate pushes and actual clocks. Combined risk score: 43.0/100. Based on airport operations, weather, and cached board history at BFI and SEA.

The verdict above is that record speaking, so it reflects how AS9940 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
10-31BFI SEA 01:25

Board clocks recorded as BFI and SEA published them.

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: AS9940 Seattle to Seattle on-time performance, measured from the BFI and SEA airport boards.

Canonical URL
https://proflightsearch.com/flight/AS9940
How we measure this →