Visit the website of the airline carrier where you have frequent flyer miles you wish to use. Most airline sites will allow you to book flights, cars and hotels online using the miles you have earned. Follow the directions on the website, as each site may be slightly different.
Call the airline carrier which you plan to cash in your frequent flyer miles for services. Many airlines have dedicated toll-free numbers for their frequent flyer members with representatives specifically trained on how to assist this segment of customer.
Cash in miles for flight upgrades and access to the airport lounges by calling the airline carrier. Many airlines let you use your frequent flyer miles when making a reservation to upgrade your seats to first class and obtain a pass to the exclusive lounges within the airport. When making your reservation, check to see if these options are available to you.
Purchase merchandise, periodical subscriptions, concert tickets and any other items as allowed by the airline carrier with your frequent flyer miles. Visit the airline carriers' websites to explore such options and learn how to trade miles for items.
Contact an airline miles broker such as Award Traveler (awardtraveler.com) to sell your accumulated frequent flyer miles. Award Traveler pays 1.0 to 1.5 cents per mile. Though this practice is against airline rules, it is not against any state or federal laws, making it legal if someone is willing to pay.
