UA1434 WashingtonIAD · 12:35 Las VegasLAS · 15:44
UA1434 by United Airlines flies from Washington (IAD) to Las Vegas (LAS) for the Sat, Oct 31 departure.
Same number through IAD → SFO → LAS
arrived at LAS · 24 min early
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 IAD and LAS are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records 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 →
Tomorrow on this route
ForecastWashington to San Francisco with United Airlines · Sun 1 Nov, local date
- Chance a departure is cancelled
- 0.3%2.9× usual
- Chance a departure leaves 60+ min late
- 7.4%0.6× usual
Forecast weather: 73% chance of rain at San Francisco
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 9 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Washington to Las Vegas flights today
same route · United AirlinesIf UA1434 is cancelled, these are the other United Airlines nonstop flights from Washington to Las Vegas on the same day, with scheduled departure times in IAD local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How UA1434 actually runs
Pro Flight Search has tracked every published board update for UA1434 across the IAD and LAS boards: schedule changes, gate pushes and actual clocks. Usually lands ~24 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 UA1434 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: N17428, N27476, N57409.
Board clocks recorded as IAD and LAS published them.
Planning around UA1434? 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: UA1434 Washington to Las Vegas on-time performance, measured from the IAD and LAS airport boards.
https://proflightsearch.com/flight/UA1434
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