Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
UNITED · FLIGHT UA 644
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 644 · DFW → DEN
departs 8:45 AM CT · arrives 10:06 AM MT
Forecast issued Thu 9:00 PM ET · 13h before departure
Odds over time
Arrive at DEN more than 15 minutes late?
43%
chance · ±0 pts
+21 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
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How late will it get to DEN?
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On time or early
56%
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15–30 min late
23%
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30 min–1 hour late
3%
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1–2 hours late
12%
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Over 2 hours late
4%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.