UA3749 JacksonvilleJAX HoustonIAH · 19:10
UA3749 by United Airlines flies from Jacksonville (JAX) to Houston (IAH).
scheduled from JAX
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at JAX and IAH 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 Jacksonville to Houston flights today
same route · United AirlinesIf UA3749 is cancelled, these are the other United Airlines nonstop flights from Jacksonville to Houston on the same day, with scheduled departure times in JAX local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UA3749 actually runs
Pro Flight Search has tracked every published board update for UA3749 across the JAX and IAH boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed -18 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how UA3749 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 JAX and IAH published them.
Planning around UA3749? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — UA3749 Jacksonville to Houston on-time performance, measured from the JAX and IAH airport boards.
https://proflightsearch.com/flight/UA3749
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