UA1664 HoustonIAH · 06:30 DenverDEN · 08:02
UA1664 by United Airlines flies from Houston (IAH) to Denver (DEN).
scheduled from IAH
Where the minutes go
last 4 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 IAH and DEN 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.
Other Houston to Denver flights today
same route · United AirlinesIf UA1664 is cancelled, these are the other United Airlines nonstop flights from Houston to Denver 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 UA1664 actually runs
Pro Flight Search has tracked every published board update for UA1664 across the IAH and DEN boards: schedule changes, gate pushes and actual clocks. Usually lands ~29 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how UA1664 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: N14511, N54552, N14545.
Board clocks recorded as IAH and DEN published them.
Planning around UA1664? 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 — UA1664 Houston to Denver on-time performance, measured from the IAH and DEN airport boards.
https://proflightsearch.com/flight/UA1664
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