AS9940 SeattleSEA · 11:30 SeattleBFI
AS9940 by Alaska Airlines flies from Seattle (SEA) to Seattle (BFI).
scheduled from SEA
The route today
live boardsTomorrow at Seattle
ForecastSun 1 Nov, local date
- 48% chance of fog
- Chance a departure is cancelled
- 0.5%usually 0.7%
- Chance a departure leaves 60+ min late
- 8.1%usually 9.3%
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Based on about 360 departures a day. · 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 Seattle to Seattle flights
same route · Alaska AirlinesIf AS9940 is cancelled, this is the other Alaska Airlines nonstop flight from Seattle to Seattle, 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 AS9940 actually runs
Pro Flight Search has tracked every published board update for AS9940 across the SEA and BFI boards: schedule changes, gate pushes and actual clocks. Combined risk score: 62.0/100. Based on airport operations, weather, and cached board history at SEA and BFI.
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.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as SEA and BFI published them.
Planning around AS9940? 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: AS9940 Seattle to Seattle on-time performance, measured from the SEA and BFI airport boards.
https://proflightsearch.com/flight/AS9940
.