Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Mar 5th. As of Feb 20th, it's showing the cheapest ticket sales at $693. That is 24% below the average price for this route, so you can spend that extra money on an adventure in Palermo.
Question : Is the price you found a good deal?
Answer : Flight prices fluctuate less than the majority of routes from the United States for PDX to PMO. They vary from $693 to $1,608. However, the sooner you book, the more you'll be able to save.
Question : How long do most people visit Palermo?
Answer : Of course you're not most people, but if you were, you'd stay roughly 12 days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : In March, the cheapest day to fly is Sunday. Being flexible with your travel days garners even more savings during booking.