UA400 DenverDEN · 20:25 AnchorageANC · 23:59
UA400 by United Airlines flies from Denver (DEN) to Anchorage (ANC) for the Wed, Sep 16 departure.
en route from DEN to ANC
board checked 9m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 20:25 · typical taxi-out at DEN ≈ 7 min. No receiver coverage over open ocean.
Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +3 min · 0 cancelled · 10 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at DEN and ANC 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 Denver to Anchorage flights today
same route · United AirlinesIf UA400 is cancelled, these are the other United Airlines nonstop flights from Denver to Anchorage on the same day, with scheduled departure times in DEN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA400 actually runs
Pro Flight Search has tracked every published board update for UA400 across the DEN and ANC boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min late. Based on 10 confirmed landings · 8/10 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA400 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: N37257, N47280, N17311, N17338.
Board clocks recorded as DEN and ANC published them.
Planning around UA400? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA400 Denver to Anchorage on-time performance, measured from the DEN and ANC airport boards.
https://proflightsearch.com/flight/UA400
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