Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
UNITED · FLIGHT UA 1015SCHEDULED · TYPICAL SCHEDULE
UA 1015 · SFO → BOS
departs 7:00 AM PT · arrives 3:54 PM ET
Forecast issued Thu 3:00 PM ET · 43h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
6%chance · ±1 pts+0 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to BOS?
On time or early
93%
15–30 min late
2%
30 min–1 hour late
2%
1–2 hours late
1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.