UA1542 HoustonIAH · 20:05 San AntonioSAT · 16:16
UA1542 by United Airlines flies from Houston (IAH) to San Antonio (SAT) for the Tue, Sep 8 departure.
departs IAH · 3 min early
board checked 1m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at IAH and SAT 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 Houston to San Antonio flights today
same route · United AirlinesIf UA1542 is cancelled, these are the other United Airlines nonstop flights from Houston to San Antonio on the same day, with scheduled departure times in IAH local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA1542 actually runs
Pro Flight Search has tracked every published board update for UA1542 across the IAH and SAT boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +3 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA1542 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 IAH and SAT published them.
Planning around UA1542? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA1542 Houston to San Antonio on-time performance, measured from the IAH and SAT airport boards.
https://proflightsearch.com/flight/UA1542
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