OS644 PraguePRG · 11:15 ViennaVIE · 12:05
OS644 by Austrian Airlines flies from Prague (PRG) to Vienna (VIE) for the Thu, Sep 17 departure.
arrival expected at VIE · on schedule
board checked 33m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at PRG and VIE 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 Prague to Vienna flights today
same route · Austrian AirlinesIf OS644 is cancelled, these are the other Austrian Airlines nonstop flights from Prague to Vienna on the same day, with scheduled departure times in PRG local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How OS644 actually runs
Pro Flight Search has tracked every published board update for OS644 across the PRG and VIE boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed -3 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how OS644 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 PRG and VIE published them.
Planning around OS644? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — OS644 Prague to Vienna on-time performance, measured from the PRG and VIE airport boards.
https://proflightsearch.com/flight/OS644
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