UA1577 ChicagoORD · 14:35 San DiegoSAN · 17:23
UA1577 by United Airlines flies from Chicago (ORD) to San Diego (SAN) for the Mon, Sep 7 departure.
Same number through ORD → SFO → SAN
departs ORD · on schedule
board checked 6m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ORD and SAN 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 Chicago to San Diego flights today
same route · United AirlinesIf UA1577 is cancelled, these are the other United Airlines nonstop flights from Chicago to San Diego on the same day, with scheduled departure times in ORD local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA1577 actually runs
Pro Flight Search has tracked every published board update for UA1577 across the ORD and SAN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: landed +127 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA1577 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as ORD and SAN published them.
Planning around UA1577? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA1577 Chicago to San Diego on-time performance, measured from the ORD and SAN airport boards.
https://proflightsearch.com/flight/UA1577
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