How does spending the holidays in Oslo or Paris sound? Way more memorable and alluring than sitting at home, right?

Your dream venture abroad is actually more financially feasible than you'd think—as long as you're smart about where and when you book.

Travel-booking site Kayak has launched a "Holiday Travel Hacker" guide for 2017-2018 to help you plan the vacation of your dreams without having to sell your kidney in the process. The guide outlines the biggest trends for New Year's, the best times to book holiday flights, and the most affordable flights in the U.S. and abroad, which Kayak defines as places where plane tickets will be lower than the median airfare for other international flights.