By Veronika Bondarenko Expedia’s annual Air Travel Hacks Report gives travelers some booking and flying tips. You keep refreshing the page hoping that the ticket price you saw when you first searched for the flight comes back — some do this fruitlessly for hours while others have made a career out of teaching others how to cross-analyze airline sites and nail down the cheapest possible ticket. There has, for years, also been a debate about whether booking at certain dates or times will give one that elusive discount airplane ticket. Some will swear on Tuesday while others will, regardless of …