Question : How long do most people stay in Vienna when they fly in from Saint Louis?
Answer : Over the next two months, passengers from STL to VIE are planning on staying for 14 days on average.
Question : Would you be willing to change your travel days if it saved you money?
Answer : For the month of December, the cheapest day to fly is Tuesday. Having flexibility in your travel plans means you can save, so be sure to plan ahead when possible.
Question : Do prices fluctuate more for this route than others?
Answer : Prices for STL to VIE do fluctuate much more than most. The further out you book a route, the more likely you are to save.