If you know there’s a trip that you want to take this year but you’re not ready to buy your tickets yet, that shouldn’t stop you from perusing flights. Doing this periodically in the weeks or months before you book can be help you get your bearings and set your expectations for how much you’ll want to pay.

Nastro recommends using search sites like Google Flights, Skyscanner and Momondo to compare prices. 

“It doesn’t matter where you’re searching as long as you get a good sampling of those flights from multiple different areas,” she says. “That will give you a better understanding each week and each month of what those flight prices look like.” 

Gemma Jamieson, Skyscanner’s senior global PR manager, says putting in the time while doing your research may help save you money in the long run.

“Airlines are being really clever about pricing and competing with each other. They’re watching data, they’re watching traveler behavior and they’re mapping out these pockets where they can be super competitive,” she says. “Doing a little bit of extra comparison, going a little bit further and shopping around for just a little bit longer than you might normally could save you lots and lots of money.” 

The biggest mistake you can make when it comes to searching for cheap flights is waiting until the last second in hopes that the flight you want will drop in price. This is especially true if you’re starting to look at holiday travel.

“Airfare tends to go in the upward direction, especially when we’re getting into peak season,” Nastro says. “The holidays are when you really want to avoid booking at the last minute.”

She wants to dispel the common misconception that airlines will add at the last minute just because an existing one sold out. 

“That’s not really how it works,” Nastro says. “There’s not an endless supply of backup flights that they can just throw on the schedule.”