UA21 AmsterdamAMS · 11:00 HoustonIAH · 14:45
UA21 by United Airlines flies from Amsterdam (AMS) to Houston (IAH) for the Sat, Sep 19 departure.
estimated arrival at IAH · local time · landing about now
board checked 42m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 11:00 · typical taxi-out at AMS ≈ 7.6 min. No receiver coverage over open ocean.
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 boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AMS and IAH are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How UA21 actually runs
Pro Flight Search has tracked every published board update for UA21 across the AMS and IAH boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +108 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA21 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: N647UA, N644UA.
Board clocks recorded as AMS and IAH published them.
Planning around UA21? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA21 Amsterdam to Houston on-time performance, measured from the AMS and IAH airport boards.
https://proflightsearch.com/flight/UA21
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