The Spirit Airlines redemption program works by either purchasing or earning miles through flights, paying with its credit card, renting cars with partner companies or staying at hotels on its list; the biggest drawback on the program is that miles expire every 3 months. One way to keep miles from expiring is to use a registered credit card at a local restaurant before the expiration date.
Spirit Airlines' reward program has some nuances that need to be understood when signing up. Regular passengers earn 50 percent of miles flown towards their bonus miles. Elite members earn 100 percent, and the easiest way to achieve this status is by signing up for a Spirit World MasterCard. The card gives those who are accepted elite status, and it earns two bonus miles for each dollar spent. There is also a 15,000 mile signup bonus for the card and an annual reward of 5,000 miles a year if $10,000 are spent in credit. To keep the elevated status, one purchase must be made every month.
Miles can only be redeemed for flights, and the rewards are tiered based on the distance flown and the time of the year. Off-peak travel over short distances are Spirit Airlines' best deal in the program, but these are only offered to Spirit credit card holders at this time.