OS771 ViennaVIE · 09:20 SofiaSOF · 11:50
OS771 by Austrian Airlines flies from Vienna (VIE) to Sofia (SOF) for the Sun, Nov 1 departure.
departs VIE · on schedule
board checked 9m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at VIE and SOF are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days. This route has few tracked flights so far, so treat this as an early read.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastVienna to Sofia with Austrian Airlines · Mon 2 Nov, local date
- Chance a departure is cancelled
- 0.3%1.4× usual
- Chance a departure leaves 60+ min late
- 2.2%0.8× usual
Forecast weather: 90% chance of rain at Sofia
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · About 4 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Vienna to Sofia flights today
same route · Austrian AirlinesIf OS771 is cancelled, these are the other Austrian Airlines nonstop flights from Vienna to Sofia on the same day, with scheduled departure times in VIE local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How OS771 actually runs
Pro Flight Search has tracked every published board update for OS771 across the VIE and SOF boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left noticeably late (~28 min) but landed a little late (~17 min). Not enough to call it.
The verdict above is that record speaking, so it reflects how OS771 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 SOF published them.
Planning around OS771? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: OS771 Vienna to Sofia on-time performance, measured from the VIE and SOF airport boards.
https://proflightsearch.com/flight/OS771
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