Question : How much should a trip from Naples (NAP) to Lisbon (LIS) cost?
Answer : Flight prices fluctuate less than the majority of routes from Italy for NAP to LIS. They range from $244 to $405. Prices tend to be lower the further out you book.
Question : In the next four weeks, what day should you book your trip?
Answer : Since low prices are preferred, look at Jul 1st. As of Jun 19th, it's showing the cheapest ticket sales at $244. That is 23% below the average price for this route, so you can spend that extra money on an adventure in Lisbon.
Question : How long do most people visit Lisbon?
Answer : Of course you're not most people, but if you were, you'd stay roughly five days.
Question : If your plans are flexible, have you considered changing your departure day?
Answer : Thursday is your lowest-cost day to fly in July. Flexibility is paramount when booking travel plans in order to keep travel costs down.
Question : What is the cheapest round-trip ticket you can get to Lisbon?
Answer : Air France is your best bet for finding that coveted low fare. They're offering fares as low as $244, while prices for other flights are as high as $405.