Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
ALASKA · FLIGHT AS 1501SCHEDULED · TYPICAL SCHEDULE
AS 1501 · ANC → BOS
departs 8:20 PM AKT · arrives 7:35 AM ET
Forecast issued Sat 10:00 PM ET · 2h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
26%chance · ±0 pts+8 pts · 24h
HOW SURE WE AREHigh. The odds now come mostly from live FAA and airport data.
How late will it get to BOS?
On time or early
74%
15–30 min late
16%
30 min–1 hour late
<1%
1–2 hours late
8%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.