UA4821 HoustonIAH · 09:35 AmarilloAMA
UA4821 by United Airlines flies from Houston (IAH) to Amarillo (AMA) for the Fri, Oct 9 departure.
departs IAH · on schedule
board checked 26m ago · checking again in 45s
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWhen 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 posting a delay still operate — rebooking usually only beats a very large posted delay. 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 — pattern not clear yet. Only 3 completed legs so far: departed -2 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 operationAircraft
Recent tails: N12201.
Board 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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