Question : Should you take that vacation to Lisbon in the next 30 days?
Answer : As of Jun 19th, the best day for booking to Lisbon (LIS) is Jun 28th. It costs $907, which is 38% below this route's average price.
Question : How long do most people visit Lisbon?
Answer : Of course you're not most people, but if you were, you'd stay roughly 10 days.
Question : Is the price you found a good deal?
Answer : Flight prices change a lot more than most routes from the United States for BWI to LIS. They vary anywhere from $759 to $6,009. Remember, the sooner you book, the better price you tend to get.
Question : Will you do what it takes to get the absolute cheapest flight?
Answer : The best day to fly on a budget this month is Wednesday. Having flexibility in your travel plans means you can save more, so be sure to plan ahead when possible.