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 2040SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 2040 · BOS → ORD
departs 5:00 PM ET · arrives 7:00 PM CT
Forecast issued Wed 12:00 PM ET · 29h before departure
Odds over time
Arrive at ORD more than 15 minutes late?
68%chance · ±13 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
31%
15–30 min late
9%
30 min–1 hour late
29%
1–2 hours late
12%
Over 2 hours late
18%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.