Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

ALASKA · FLIGHT AS 1337 SCHEDULED · TYPICAL SCHEDULE

Tuesday, September 29 Yesterday

AS 1337 · BOS → SEA

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

Forecast issued Tue 10:00 PM ET · 2h after departure

Arrive at SEA more than 15 minutes late?

44% chance · ±3 pts +5 pts · 24h

HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.

How late will it get to SEA?

On time or early
55%
15–30 min late
9%
30 min–1 hour late
23%
1–2 hours late
8%
Over 2 hours late
4%
Cancelled
<1%

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

What’s moving the odds

↑ 7pm departures from BOS are often late

↑ This flight has been late 31% of the time recently

↑ Arrivals into SEA at that hour are often late

↓ Tuesdays in September are usually quieter than average

↓ Other factors

Weather at each end

BOS (origin) Gusts11 kt Ceiling600 ft Visibility1.5 mi Precip0.03 in

SEA (destination) Gusts24 kt Ceiling500 ft Visibility3 mi Precip0.04 in

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?