Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
UNITED · FLIGHT UA 440SCHEDULED · TYPICAL SCHEDULE
Today
UA 440 · BOI → ORD
departs 12:34 PM MT · arrives 5:05 PM CT
Forecast issued Fri 9:00 PM ET · 6h after departure
Odds over time
Arrive at ORD more than 15 minutes late?
20%chance · ±0 pts+2 pts · 24h
HOW SURE WE AREVery high. The odds now come almost entirely from live conditions.
How late will it get to ORD?
On time or early
79%
15–30 min late
8%
30 min–1 hour late
5%
1–2 hours late
4%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.