Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

ALASKA · FLIGHT AS 1337 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2

AS 1337 · BOS → SEA

departs 7:44 PM ET · arrives 11:07 PM PT

Forecast issued Wed 11:00 AM ET · 57h before departure

Arrive at SEA more than 15 minutes late?

39% chance · ±6 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
61%
15–30 min late
13%
30 min–1 hour late
15%
1–2 hours late
8%
Over 2 hours late
3%
Cancelled
<1%

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

What’s moving the odds

↑ This flight has been late 38% of the time recently

↑ Later flights pick up delays from earlier in the day

↑ 7pm departures from BOS are often late

↓ Other factors

↓ Cloud base down to 800 ft forecast at SEA that day

Weather at each end

BOS (origin) Gusts20 kt Ceiling4,900 ft Visibility9.33333 mi Precipnone

SEA (destination) Gusts7 kt Ceiling800 ft Visibility7 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 1337 · BOS → SEA

Odds over time

How late will it get to SEA?