→ Play musical chairs. This is a favorite tip of Kyle Potter, executive editor of the Thrifty Traveler website. It works for basic economy fares on Delta. He says before your flight is scheduled to depart, keep looking at your booking on the airline’s website to see if a better seat is available—even up to the moment of boarding. “There’s basically a 24-hour window to pick the best of what’s left for free,” he says. “It pays to check back with the seat map, again and again, especially in the last few hours.”