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 644SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 644 · DEN → PDX
departs 11:27 AM MT · arrives 1:09 PM PT
Forecast issued Thu 10:00 PM ET · 15h before departure
Odds over time
Arrive at PDX more than 15 minutes late?
11%chance · ±1 pts−1 pt · 24h
HOW SURE WE AREGood. The odds now lean mostly on firmed-up weather forecasts.
How late will it get to PDX?
On time or early
88%
15–30 min late
3%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.