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 1535
SCHEDULED · TYPICAL SCHEDULE
UA 1535 · IAD → IAH
departs 12:50 PM ET · arrives 3:11 PM CT
Forecast issued Thu 8:00 PM ET · 65h before departure
Odds over time
Arrive at IAH more than 15 minutes late?
26%
chance · ±4 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 IAH?
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On time or early
73%
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15–30 min late
4%
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30 min–1 hour late
12%
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1–2 hours late
5%
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Over 2 hours late
5%
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Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.