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 1640SCHEDULED · TYPICAL SCHEDULE
Today
UA 1640 · FAI → ORD
departs 8:45 PM AKT · arrives 5:42 AM CT
Forecast issued Fri 7:00 AM ET · 18h before departure
Odds over time
Arrive at ORD more than 15 minutes late?
18%chance · ±2 pts+0 pts · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to ORD?
On time or early
82%
15–30 min late
9%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.