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The Southwest Rapid Rewards program is most beneficial for budget-minded travelers based in the United States who frequently fly to major cities around the U.S., Mexico, Central America and the Caribbean. Southwest offers more than 4,000 flights a day to 100 destinations. By becoming a Southwest Rapid Rewards member, you'll earn points for every dollar spent on Southwest flights and with the airline's hotel, car rental and retail partners. If you have one of the Southwest Rapid Rewards credit cards from Chase Visa, you can earn additional points on Southwest Airlines and partner purchases and by making everyday purchases. You can use your Rapid Rewards points to pay for merchandise, gift cards, hotel stays, car rentals and the cost of air travel on any Southwest or international partner flight. If you are a Southwest credit card holder, you can also use points to cover the cost of experiences like wine tastings, cruises and spa packages.

The Alaska Airlines Mileage Plan caters to flyers who frequent various destinations in Alaska, West Coast cities (like Seattle and Portland, Oregon) and major transportation hubs (like Atlanta and New York City), as well as destinations in Canada, Mexico and Costa Rica. By joining the Alaska Airlines Mileage Plan, you can start earning miles on every Alaska Airlines flight you take and eligible flights on Alaska Airlines' 18 partner airlines, including American Airlines, Emirates and British Airways. You can also earn miles by making everyday purchases with the Alaska Airlines Visa Signature card or by staying with six participating hotel partners, including Best Western, InterContinental and Marriott. The miles you earn can be used toward free flights on Alaska Airlines and other participating carriers, partner hotel stays, magazine subscriptions or donations to charity.

Spirit Airlines' Free Spirit frequent flyer program caters to people who travel domestically all over the United States, including cities like Los Angeles, Chicago, Baltimore, Dallas and Fort Lauderdale, Florida. Free Spirit is also advantageous for travelers who visit Latin American and Caribbean destinations like Aruba, Jamaica, Costa Rica and Lima, Peru. As a Free Spirit member, you'll earn miles every time you fly with Spirit Airlines. You can also collect miles for everyday purchases if you hold a Spirit Airlines World Mastercard. Plus, Spirit Airlines has partnerships with select restaurants, Choice Hotels, cruise lines, car rental agencies and more, which allow you to earn miles for dining, hotel stays, cruise vacations and car rentals.