Question 1

Where does OS 2521 land?

Accepted Answer

OS 2521 operated by Austrian Airlines arrives at Vienna International Airport (VIE) in Vienna. The scheduled arrival time is 14:00, Terminal 2.

Question 2

Is OS 2521 usually on time?

Accepted Answer

On-time performance for OS 2521 varies with season, weather, and air traffic. TrackMyWings will track live and historical on-time rates for this flight at launch — allow buffer time for tight connections until you can check recent data.

Question 3

Which terminal does OS 2521 depart from?

Accepted Answer

OS 2521 departs from Washington Dulles International Airport (IAD), Terminal 5. The scheduled departure time is 08:00. Always confirm terminal information with Austrian Airlines closer to your travel date as it can change.

Question 4

What aircraft does OS 2521 use?

Accepted Answer

OS 2521 is operated on a Boeing 787-9 Dreamliner with 296 seats across 3 cabin classes. Aircraft assignments can change — check with Austrian Airlines for the latest configuration.

Question 5

How long is the OS 2521 flight?

Accepted Answer

The scheduled flight duration for OS 2521 from Dulles (IAD) to Vienna (VIE) is 8h 57m. Actual flight time may vary depending on air traffic, weather, and routing.

OS 2521

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