UA4729 SeattleSEA · 12:05 Las VegasLAS · 15:11
UA4729 by United Airlines flies from Seattle (SEA) to Las Vegas (LAS) for the Fri, Sep 18 departure.
Same number through SEA → LAX → LAS
departs SEA · on schedule
board checked 11m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and LAS 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 Seattle to Las Vegas flights today
same route · United AirlinesIf UA4729 is cancelled, these are the other United Airlines nonstop flights from Seattle to Las Vegas on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA4729 actually runs
Pro Flight Search has tracked every published board update for UA4729 across the SEA and LAS boards: schedule changes, gate pushes and actual clocks. Usually lands ~23 min early. Based on 5 confirmed landings · 5/5 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA4729 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: N611UX, N87367, N86372, N87380.
Board clocks recorded as SEA and LAS published them.
Planning around UA4729? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA4729 Seattle to Las Vegas on-time performance, measured from the SEA and LAS airport boards.
https://proflightsearch.com/flight/UA4729
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