OS646Austrian Airlines · PRG → VIE
live · 3m ago
Route confirmed Austrian Airlines

OS646 PraguePRG · 16:50 ViennaVIE · 17:40

OS646 by Austrian Airlines flies from Prague (PRG) to Vienna (VIE) for the Mon, Sep 14 departure.

Right nowEn route to Vienna · off blocks 16:46 · 4 min early
17:40

estimated arrival at VIE · local time · ~15 min from now

En routeOS646 · position estimated
PRGPragueVIEVienna
Estimated from the boardsarr 17:40

Board estimate · gate and arrival times. Off blocks 16:46 · typical taxi-out at PRG ≈ 7 min.

Typical gate push+10 minmedian posted departure

The route today

live boards
PRGPragueOn-time likelyPRG delay board →
VIEViennaOn-time likelyVIE delay board →
PRG→VIEevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
1.4%Chance of cancellation
+8 minAvg hub delay right now

Conditions 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.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

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 Prague to Vienna flights today

same route · Austrian Airlines
OS650departs 07:30
OS644departs 11:15

If OS646 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 OS646 actually runs

Pro Flight Search has tracked every published board update for OS646 across the PRG and VIE boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +10 min. Not enough to call it.

The verdict above is that record speaking, so it reflects how OS646 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
09-14PRG 16:50 16:46 (−4)VIE 17:40
09-13PRG 16:50 17:00 (+10)VIE

Board clocks recorded as PRG and VIE published them.

Planning around OS646? 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 — OS646 Prague to Vienna on-time performance, measured from the PRG and VIE airport boards.

Canonical URL
https://proflightsearch.com/flight/OS646
How we measure this →