OS439 ViennaVIE · 06:25 BilbaoBIO · 09:05
OS439 by Austrian Airlines flies from Vienna (VIE) to Bilbao (BIO) for the Thu, Sep 17 departure.
en route from VIE to BIO
board checked 15m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 06:34 · typical taxi-out at VIE ≈ 7 min.
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at VIE and BIO 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 OS439 actually runs
Pro Flight Search has tracked every published board update for OS439 across the VIE and BIO boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: left a little late (~9 min) but landed right on schedule. Not enough to call it.
The verdict above is that record speaking, so it reflects how OS439 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 VIE and BIO published them.
Planning around OS439? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — OS439 Vienna to Bilbao on-time performance, measured from the VIE and BIO airport boards.
https://proflightsearch.com/flight/OS439
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