Schedule: the flights that flew on Wednesday, Oct 7, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

ALASKA · FLIGHT AS 306 SCHEDULED · TYPICAL SCHEDULE

Wednesday, October 14

AS 306 · BOS → SEA

departs 6:35 PM ET · arrives 9:55 PM PT

Forecast issued Mon 6:00 PM ET · 49h before departure

Arrive at SEA more than 15 minutes late?

36% 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
64%
15–30 min late
18%
30 min–1 hour late
10%
1–2 hours late
5%
Over 2 hours late
2%
Cancelled
<1%

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

What’s moving the odds

↑ 6pm departures from BOS are often late

↑ Arrivals into SEA at that hour are often late

↑ This flight has been late 36% of the time recently

↓ Wednesdays in October are usually quieter than average

↓ Cloud base down to 700 ft forecast at SEA that day

Weather at each end

BOS (origin) Gusts20 kt Ceiling200 ft Visibility0.5 mi Precip0.08 in

SEA (destination) Gusts7 kt Ceiling700 ft Visibility4 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 306 · BOS → SEA

Odds over time

How late will it get to SEA?