Schedule: a typical Sunday (the flights of Jul 26, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
UNITED · FLIGHT UA 644
SCHEDULED · TYPICAL SCHEDULE
UA 644 · DFW → DEN
departs 8:45 AM CT · arrives 10:06 AM MT
Forecast issued Thu 8:00 PM ET · 62h before departure
Odds over time
Arrive at DEN more than 15 minutes late?
14%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
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How late will it get to DEN?
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On time or early
85%
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15–30 min late
6%
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30 min–1 hour late
2%
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1–2 hours late
3%
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Over 2 hours late
2%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.