UA4729United Airlines · SEA → LAX
live · 46m ago
Route confirmed United Airlines

UA4729 SeattleSEA Los AngelesLAX

UA4729 by United Airlines flies from Seattle (SEA) to Los Angeles (LAX).

Right nowNext departure tomorrow Operates daily
16:25

scheduled from SEA

The route today

live boards
SEASeattleModerate riskSEA delay board →
LAXLos AngelesOn-time likelyLAX delay board →
SEA→LAXevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
35%Chance of 15+ min delay
1.3%Chance of cancellation
+5 minTypical airport delay in this weather

Conditions at SEA and LAX 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 at SEA

Forecast

Fri 13 Nov, local date

High14°Clikely 13°C to 15°C
Low10°Clikely 9°C to 11°C
  • 93% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Los Angeles

Forecast

Fri 13 Nov, local date

High21°Clikely 20°C to 22°C
Low16°Clikely 14°C to 17°C
  • 97% chance of rain

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Seattle to Los Angeles flights today

same route · United Airlines
UA6053departs 06:00
UA1027departs 12:20
UA1730departs 16:39
UA5955departs 18:30

If UA4729 is cancelled, these are the other United Airlines nonstop flights from Seattle to Los Angeles on the same day, with scheduled departure times in SEA 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 UA4729 actually runs

Pro Flight Search has tracked every published board update for UA4729 across the SEA and LAX boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at SEA and LAX.

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.

Planning around UA4729? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA4729 Seattle to Los Angeles on-time performance, measured from the SEA and LAX airport boards.

Canonical URL
https://proflightsearch.com/flight/UA4729
How we measure this →