Question : How long do most people stay in Lisbon?
Answer : Of course you're not most people, but if you were, you'd stay roughly 19 days.
Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Jun 26th. As of Jun 19th, it's showing the cheapest ticket sales at $1,192. That is 35% below the average price for this route, so you can spend that extra cash on a fun experience in Lisbon.
Question : Do prices fluctuate more for this route than others?
Answer : Ranging anywhere from $1,192 to $3,662, prices for AUA to LIS do fluctuate much more than most routes from Aruba. Remember, the sooner you book, the more you'll be able to save.
Question : Is price more important than specific travel days for you?
Answer : The best day to fly on a budget this month is Monday. Being flexible with your travel days garners even more savings during booking.