Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Mar 15th. As of Feb 27th, it's showing the cheapest ticket sales at $1,340. That is 5% below the average price for this route, so you can spend that extra money on an adventure rather than the flight.
Question : Do prices fluctuate more for this route than others?
Answer : Flight prices change less than the majority of routes from Trinidad and Tobago for POS to VIE. They vary from $1,340 to $1,769. The further out you book a route, the more likely you are to save.
Question : How long do most people stay in Vienna?
Answer : Of course you're not most people, but if you were, you'd stay roughly two weeks.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : In March, the cheapest day to fly is Wednesday. Flexibility is paramount when booking travel plans in order to keep travel costs down.