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.
UNITED · FLIGHT UA 1186SCHEDULED · TYPICAL SCHEDULE
UA 1186 · ORD → BOS
departs 6:05 AM CT · arrives 9:29 AM ET
Forecast issued Fri 6:00 AM ET · 49h before departure
Odds over time
Arrive at BOS more than 15 minutes late?
5%chance · ±0 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
95%
15–30 min late
2%
30 min–1 hour late
1%
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%.