Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
ALASKA · FLIGHT AS 378SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AS 378 · SEA → BWI
departs 9:03 AM PT · arrives 5:04 PM ET
Forecast issued Wed 10:00 AM ET · 26h before departure
Odds over time
Arrive at BWI more than 15 minutes late?
18%chance · ±2 pts−1 pt · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to BWI?
On time or early
82%
15–30 min late
9%
30 min–1 hour late
6%
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%.