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.
UNITED · FLIGHT UA 2631SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 2631 · BOS → ORD
departs 7:19 AM ET · arrives 9:17 AM CT
Forecast issued Wed 5:00 AM ET · 26h before departure
Odds over time
Arrive at ORD more than 15 minutes late?
19%chance · ±4 pts+5 pts · 24h
HOW SURE WE AREModerate. The odds now blend history with early weather forecasts.
How late will it get to ORD?
On time or early
80%
15–30 min late
4%
30 min–1 hour late
10%
1–2 hours late
4%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.