For Christmas, airfares are about 5% cheaper the week of December 5th than the rest of the year. Maybe that's only $20 on a $400 round-trip, but that’s still enough to get your favorite second cousin a gift card to Chili's. After next week, you'll risk falling into the dreaded under-21-day-advance-purchase window, and paying a lot more.
For your Rockin' New Year's Eve, the savings are even better. The week of December 5th historically has airfares almost 11% lower than the rest of the year. That's about $44 on a $400 round-trip. Or, as you'll learn, exactly one and a half vodka-sodas on NYE in South Beach.
Of course, results will vary widely based on the routes, and if you're looking for the nearest bottle of Xanax because you haven't booked your Christmas flights yet, by all means go ahead and book today. But if we've learned anything in 2016, it's that those who don't learn from history are doomed to repeat it. So maybe looking at what's happened in previous years will, at the very least, save you a couple of Harriet Tubmans.