If you have to be at your destination by a particular time, be careful about waiting too close to your departure time before purchasing your ticket. If you do not have your seat reserved a week before you need to be there you run the risk of not being able to get a flight. This is especially true of flights to popular destinations and during peak travel season.
If you want to travel to Europe during the summer (when, admittedly, everyone else wants to travel to Europe) you definitely can’t procrastinate. “Prices typically rise through the spring and peak in June as summer arrives,” Hopper’s data science team determined. And if you plan on traveling during a summer holiday — Memorial Day, the Fourth of July, Labor Day — the best fares can typically be found at least three weeks in advance of your departure.
In Google Chrome or Safari, incognito is enabled by hitting Command (or “Control” if using PC), Shift, “N”. For Mozilla Firefox or Internet Explorer, hit Command (or “Control” if using a PC), Shift, “P”. This will open a new browser window where your information is not tracked, thus not inflating prices as you search. Note: if you're using an older version of OS X, open Safari then click “Safari” in the menu bar, and select “Private Browsing”.