Leveraging one of the best ways to get in the upgrade game almost instantly
More and more airlines nowadays restrict mileage- purchase, a favorite FCF tool because it gets you into the upgrade game lightning fast. The most common restrictions include imposing a waiting period before you can buy miles or requiring an account to have existing miles to purchase.
Below is a chart listing the major airlines offering mileage-purchase, the restrictions each imposes, and a workaround. Often that just boils down to one word: planning.