UA4643 BillingsBIL · 17:57 DenverDEN · 19:53
UA4643 by United Airlines flies from Billings (BIL) to Denver (DEN) for the Tue, Aug 18 departure.
departs BIL · on schedule
board checked 5m ago · checking again in 45s
Where the minutes go
last 5 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 +55 min · 0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BIL 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 Billings to Denver flights today
same route · United AirlinesIf UA4643 is cancelled, these are the other United Airlines nonstop flights from Billings to Denver on the same day, with scheduled departure times in BIL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4643 actually runs
Pro Flight Search has tracked every published board update for UA4643 across the BIL and DEN boards: schedule changes, gate pushes and actual clocks. Usually lands ~61 min late. Based on 4 confirmed landings · 1/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4643 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: N132SY, N532GJ, N106SY, N635SY.
Board clocks recorded as BIL and DEN published them.
Planning around UA4643? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4643 Billings to Denver on-time performance, measured from the BIL and DEN airport boards.
https://proflightsearch.com/flight/UA4643
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