Schedule: the flights that flew on Tuesday, Sep 29, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

ALASKA · FLIGHT AS 309 SCHEDULED · TYPICAL SCHEDULE

Tuesday, October 6

AS 309 · DEN → SEA

departs 6:16 PM MT · arrives 7:53 PM PT

Forecast issued Sun 4:00 PM ET · 52h before departure

Arrive at SEA more than 15 minutes late?

28% chance · ±4 pts – · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to SEA?

On time or early
71%
15–30 min late
17%
30 min–1 hour late
8%
1–2 hours late
2%
Over 2 hours late
<1%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ 6pm departures from DEN are often late

↑ Later flights pick up delays from earlier in the day

↑ SEA is prone to delays

↓ Tuesdays in October are usually quieter than average

↓ Mostly benign weather forecast at DEN

Weather at each end

DEN (origin) Gusts13 kt Ceilingnone (clear) Visibility10+ mi Precipnone

SEA (destination) Gusts10 kt Ceiling300 ft Visibility9 mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

AS 309 · DEN → SEA

Odds over time

How late will it get to SEA?