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 1637SCHEDULED · TYPICAL SCHEDULE
Tomorrow
AS 1637 · LAS → ANC
departs 4:33 PM PT · arrives 8:59 PM AKT
Forecast issued Wed 5:00 AM ET · 38h before departure
Odds over time
Arrive at ANC more than 15 minutes late?
22%chance · ±3 pts+0 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to ANC?
On time or early
78%
15–30 min late
12%
30 min–1 hour late
2%
1–2 hours late
7%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.