UA637 WashingtonIAD · 08:25 Los AngelesLAX · 10:56
UA637 by United Airlines flies from Washington (IAD) to Los Angeles (LAX).
Same number through IAD → AUS → LAX
scheduled from IAD
Where the minutes go
last 6 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 operation0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at IAD and LAX 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Washington to Los Angeles flights today
same route · United AirlinesIf UA637 is cancelled, these are the other United Airlines nonstop flights from Washington to Los Angeles on the same day, with scheduled departure times in IAD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA637 actually runs
Pro Flight Search has tracked every published board update for UA637 across the IAD and LAX boards: schedule changes, gate pushes and actual clocks. Usually lands ~36 min early. Based on 7 confirmed landings · 7/7 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 UA637 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: N38727, N39726, N73270, N13716.
Board clocks recorded as IAD and LAX published them.
Planning around UA637? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA637 Washington to Los Angeles on-time performance, measured from the IAD and LAX airport boards.
https://proflightsearch.com/flight/UA637
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