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 1183
SCHEDULED · TYPICAL SCHEDULE
Tomorrow
UA 1183 · BOS → IAH
departs 3:54 PM ET · arrives 7:08 PM CT
Forecast issued Thu 6:00 AM ET · 34h before departure
Odds over time
Arrive at IAH more than 15 minutes late?
30%
chance · ±5 pts
−6 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
70%
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15–30 min late
9%
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30 min–1 hour late
11%
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1–2 hours late
6%
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Over 2 hours late
4%
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Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.