Upgrade flight without paying full price by using frequent flyer miles, expending frequent flyer miles, or finding last-minute bargains at the airport. Discount upgrades are sometimes available just before departure from some airlines, so it does not hurt to ask at the gate. Elite status and frequent flyer programs also enhance your chances of being upgraded for free or at a reduced rate. Off-season booking and elastic fares also boost your chance of getting a superior seat without creating a hole in your pocket.