OS521Austrian Airlines · VIE → LIN
live · 25m ago
Route confirmed Austrian Airlines

OS521 ViennaVIE · 07:30 MilanLIN · 08:55

OS521 by Austrian Airlines flies from Vienna (VIE) to Milan (LIN) for the Fri, Nov 6 departure.

Right nowEn route to Milan · off blocks 07:49 · 19 min late
08:55

estimated arrival at LIN · local time · ~7 min from now

En routeOS521 · position estimated
VIEViennaLINMilan
Estimated from the boardsarr 08:55

Board estimate · gate and arrival times. Off blocks 07:49 · typical taxi-out at VIE ≈ 6.9 min.

Typical gate push+19 minmedian posted departure
Wins back in air~23 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 3 operations · gate push → arrival
0+30+60+90 min
11-06
+19 gate
11-05
+32 gate · +4 arrival
11-04
+5 gate · −13 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The route today

live boards
VIEViennaOn-time likelyVIE delay board →
LINMilanHigh riskLIN delay board →
VIE→LINevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
31%Chance of 15+ min delay
3.1%Chance of cancellation
+8 minTypical airport delay in this weather

Driven mainly by LIN (Milan), currently flying MVFR (marginal visual). These figures come from both airports' records 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 →

Tomorrow at Vienna

Forecast

Sat 7 Nov, local date

High8°Clikely 7°C to 10°C
Low0°Clikely −2°C to 2°C
  • 35% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Milan

Forecast

Sat 7 Nov, local date

High12°Clikely 11°C to 14°C
Low7°Clikely 5°C to 9°C
  • 30% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Vienna to Milan flights today

same route · Austrian Airlines
OS523departs 12:45
OS525departs 15:05
OS527departs 18:30
OS529departs 20:35

If OS521 is cancelled, these are the other Austrian Airlines nonstop flights from Vienna to Milan 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 OS521 actually runs

Pro Flight Search has tracked every published board update for OS521 across the VIE and LIN boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left a little late (~19 min) but landed right on schedule. Not enough to call it.

The verdict above is that record speaking, so it reflects how OS521 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-06VIE 07:30 07:49 (+19)LIN 08:55
11-05VIE 07:30 08:02 (+32)LIN 08:55 08:59 (+4)
11-04VIE 07:30 07:35 (+5)LIN 08:55 08:42 (−13)

Aircraft

Recent tails: OELBO, OELWH.

Board clocks recorded as VIE and LIN published them.

Planning around OS521? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: OS521 Vienna to Milan on-time performance, measured from the VIE and LIN airport boards.

Canonical URL
https://proflightsearch.com/flight/OS521
How we measure this →