JL939 San AntonioSAT DallasDAL · 15:18
JL939 by Japan Airlines flies from San Antonio (SAT) to Dallas (DAL).
scheduled from SAT
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SAT and DAL 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.
How JL939 actually runs
Pro Flight Search has tracked every published board update for JL939 across the SAT and DAL boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +27 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how JL939 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: N939CF.
Board clocks recorded as SAT and DAL published them.
Planning around JL939? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — JL939 San Antonio to Dallas on-time performance, measured from the SAT and DAL airport boards.
https://proflightsearch.com/flight/JL939
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