UA4821 HoustonIAH · 09:30 AmarilloAMA
UA4821 by United Airlines flies from Houston (IAH) to Amarillo (AMA) for the Fri, Oct 30 departure.
departs IAH · on schedule
board checked 44m ago · checking again in 45s
The route today
live boardsTomorrow on this route
ForecastHouston to Amarillo with United Airlines · Sat 31 Oct, local date
- Chance a departure is cancelled
- 0.6%0.8× usual
- Chance a departure leaves 60+ min late
- 4.4%1.3× usual
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 3 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Houston to Amarillo flights today
same route · United AirlinesIf UA4821 is cancelled, these are the other United Airlines nonstop flights from Houston to Amarillo 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 UA4821 actually runs
Pro Flight Search has tracked every published board update for UA4821 across the IAH and AMA boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: departed +12 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA4821 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as IAH and AMA published them.
Planning around UA4821? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: UA4821 Houston to Amarillo on-time performance, measured from the IAH and AMA airport boards.
https://proflightsearch.com/flight/UA4821
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