Famous for its stunning beaches, booming craft beer scene, and laid-back vibes, this California beach city has been a popular Spring break retreat for years. Though not typically thought of as a budget getaway, Booking.com's year-over-year research shows that costs of a San Diego escape have dropped 17 percent since last year, making your dreams of getting lost in the sweeping views of La Jolla much easier on the wallet than in years past.