UA4521 Fayetteville/Springdale/RogersXNA HoustonIAH · 13:31
UA4521 by United Airlines flies from Fayetteville/Springdale/Rogers (XNA) to Houston (IAH) for the Thu, Sep 10 departure.
arrived at IAH · on schedule
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.
How UA4521 actually runs
Pro Flight Search has tracked every published board update for UA4521 across the XNA and IAH boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 3 completed legs so far: landed -10 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA4521 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 XNA and IAH published them.
Planning around UA4521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4521 Fayetteville/Springdale/Rogers to Houston on-time performance, measured from the XNA and IAH airport boards.
https://proflightsearch.com/flight/UA4521
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