UA3912United Airlines · IAH → GIG
live · 31m ago
Route confirmed United Airlines

UA3912 HoustonIAH Rio De JaneiroGIG · 00:50

UA3912 by United Airlines flies from Houston (IAH) to Rio De Janeiro (GIG).

Same number through IAH → ORD → GIG

Right nowNext departure today Operates daily
19:30

scheduled from IAH

The route today

live boards
IAHHoustonHigh riskIAH delay board →
GIGRio De JaneiroOn-time likelyGIG delay board →
IAH→GIGevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
30%Chance of 15+ min delay
1.1%Chance of cancellation
+4 minTypical airport delay in this weather

Driven mainly by IAH (Houston), currently flying MVFR (marginal visual). These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Houston

Forecast

Thu 12 Nov, local date

High26°Clikely 23°C to 28°C
Low15°Clikely 12°C to 17°C
  • 26% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at MCO

Forecast

Thu 12 Nov, local date

High26°Clikely 24°C to 28°C
Low17°Clikely 15°C to 20°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Houston to Rio De Janeiro flights today

same route · United Airlines
UA2245departs 07:20
UA2260departs 08:25
UA2310departs 10:05
UA2662departs 12:22
UA496departs 14:20
UA1571departs 16:55

If UA3912 is cancelled, these are the other United Airlines nonstop flights from Houston to Rio De Janeiro on the same day, with scheduled departure times in IAH local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA3912 actually runs

Pro Flight Search has tracked every published board update for UA3912 across the IAH and GIG boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: landed -28 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how UA3912 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Planning around UA3912? 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: UA3912 Houston to Rio De Janeiro on-time performance, measured from the IAH and GIG airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3912
How we measure this →