Travelers often swap theories on the right—and wrong—time to book a flight. We've heard it all: The lowest fares are on Tuesdays at 3 p.m. ET. (No, Wednesday at 1 a.m. is the best time to buy!) You need to book at least two months before you fly. (No, you should look for a deal and fly at the last minute!) Websites like Kayak suggest when you should buy, or if you should wait—like we're all trading stocks—but there's no guarantee. And according to George Hobica of AirfareWatchdog, "There is no secret time. You need to look four times a day—minimum—every day of the week, as far in advance as you can."

 

But the latest study by Expedia and the Airlines Reporting Corporation says that 2017 "could be a banner year for travelers taking to the skies," with a new ideal time to book. Based on billions (yes, billions) of passenger flights from January 1, 2016, through October 24, 2016, the study concluded that the best day to buy airline tickets is Sunday, especially if you're booking more than 21 days in advance. Weekends are generally a good time to buy, but not Fridays, since there's an uptick then in business travel bookings. Do this and you "can save more than 30 percent to Europe and 17 percent on travel domestically," says the study.

 

“For today’s traveler, this confluence of circumstances—more planes, lower prices, more destinations—is exceptional,” Greg Schulze, senior VP of Expedia's commercial strategy and services, said in the 2017 Global Air Travel Outlook report. “It means that the barriers to booking a dream trip are lowered. It also means that everyday travel—flights to see the family, work trips—are likely to be easier to book at a lower price."