Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

UNITED · FLIGHT UA 1129 SCHEDULED · TYPICAL SCHEDULE

Monday, October 5

UA 1129 · DEN → IAH

departs 10:07 AM MT · arrives 1:40 PM CT

Forecast issued Sat 3:00 PM ET · 45h before departure

Arrive at IAH more than 15 minutes late?

11% chance · ±2 pts −1 pt · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to IAH?

On time or early
88%
15–30 min late
5%
30 min–1 hour late
2%
1–2 hours late
2%
Over 2 hours late
2%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ This flight has been late 26% of the time recently

↑ 10am departures from DEN are often late

↑ DEN is busy at that time

↓ Mostly benign weather forecast at DEN

↓ Mondays in October are usually quieter than average

Weather at each end

DEN (origin) Gusts17 kt Ceilingnone (clear) Visibility10+ mi Precipnone

IAH (destination) Gusts18 kt Ceiling11,000 ft Visibility10+ mi Precipnone

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

UA 1129 · DEN → IAH

Odds over time

How late will it get to IAH?