In fact, time really is of the most frugal essence here, as Hopper maintains ticket prices increase daily as the holidays near. It's almost like the excess demand causes the prices to skyrocket, or something: "In the final two weeks leading up to Christmas, flight prices will spike by $7 per day," according to the company's annual Holiday Travel Index.
But if you're a procrastinator who leaves holiday planning to the small, nail-biting minutes, there are still some viable options for saving a bit of scratch in the month of December. Hopper concludes that booking a flight on Saturday, December 16 or Tuesday, December 19 is likely to save you bundles. Comparatively, you'll be shelling out an additional $110 if you chose to book a flight on December 22, the busiest day of the year for Christmas travel.