United AirlinesUA
Flights UA129 20:00 daily
live
Direct flights from Houston (IAH) to Rio De Janeiro (GIG): 7 nonstop departures observed each week across 1 airline. The median arrival is 18 minutes late. 1 of the 4 tracked flights was cancelled. The nonstop covers 8,088 km, an estimated 10 hours 52 minutes in the air. Measured by Pro Flight Search from live flight boards at Houston and Rio De Janeiro. Updated 12 September 2026 at 11:56 UTC.
IAH
Houston
smooth · +0
GIG
Rio De Janeiro
tracking
8,088 km · ~10h 52m est.
Running clean · 1 airline · 7x weekly · nonstop
100 / 100
route health from live IAH and GIG delay boards
Median arrival delay is +18 min. 1 of 4 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+18 minacross the last 4 operated legs
Flight time~10h 52mestimated from route distance
Weekly departures7x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-12UA3929cancelledCNX
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at GIG: 49% odds of a 15+ minute delay and around +50 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Houston to Rio De Janeiro route actually runs
Pro Flight Search records official board updates for nonstop IAH to GIG flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Houston (IAH) to Rio De Janeiro (GIG) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/IAH-GIG
IAH to GIG questions
Is IAH–GIG running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from IAH to GIG?
Great-circle distance is 8,088 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 601–723 min gate-to-gate on this route.
How often does IAH–GIG fly?
United Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at IAH and arrival-side delay at GIG, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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