UA684 Los AngelesLAX · 19:10 SeattleSEA · 21:59
UA684 by United Airlines flies from Los Angeles (LAX) to Seattle (SEA) for the Sat, Oct 17 departure.
en route from LAX to SEA
board checked 16m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 19:51 · typical taxi-out at LAX ≈ 5 min.
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 LAX and SEA 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 Los Angeles to Seattle flights today
same route · United AirlinesIf UA684 is cancelled, these are the other United Airlines nonstop flights from Los Angeles to Seattle on the same day, with scheduled departure times in LAX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA684 actually runs
Pro Flight Search has tracked every published board update for UA684 across the LAX and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs ~21 min late. Based on 4 confirmed departures · 2/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UA684 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: N17315, N17333, N27274.
Board clocks recorded as LAX and SEA published them.
Planning around UA684? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA684 Los Angeles to Seattle on-time performance, measured from the LAX and SEA airport boards.
https://proflightsearch.com/flight/UA684
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