Vienna is 7 hours ahead of Austin. When it's 9:00 AM in Austin, it's 4:00 PM in Vienna. Both cities observe DST, maintaining the 7-hour difference year-round.
Austin uses CT (Central Time) while Vienna uses CET/CEST.
Optimal window: 7:00 AM - 10:00 AM Austin time (2:00 PM - 5:00 PM Vienna). Early morning calls from Austin catch afternoon business hours in Vienna.
Austrian Airlines and connecting flights link Austin to Vienna International Airport.