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 645SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 645 · DEN → FSD
departs 5:28 PM MT · arrives 8:08 PM CT
Forecast issued Thu 11:00 PM ET · 20h before departure
Odds over time
Arrive at FSD more than 15 minutes late?
24%chance · ±2 pts+1 pt · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to FSD?
On time or early
75%
15–30 min late
14%
30 min–1 hour late
3%
1–2 hours late
6%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.