Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALASKA · FLIGHT AS 473SCHEDULED · TYPICAL SCHEDULE
AS 473 · STL → SEA
departs 6:02 AM CT · arrives 8:30 AM PT
Forecast issued Thu 10:00 PM ET · 57h before departure
Odds over time
Arrive at SEA more than 15 minutes late?
11%chance · ±1 pts– · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to SEA?
On time or early
89%
15–30 min late
6%
30 min–1 hour late
2%
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%.