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Here's when to book your hotel, flight and rental car for your summer vacation

Megan Leonhardt

To determine the best time for U.S. travelers to book trips worldwide, Expedia crunched the numbers, looking at consumer demand and pricing for flights, hotels and rental cars available on the company's platform for trips between May 20 and Sept. 30, 2019. The travel site found that if you book at the right time, you can save hundreds off the average cost of a week-long summer vacation. Expedia found that for U.S. travelers looking to travel during summer, the "sweet spot" for airfares is about three weeks to a month ahead of time.