Some online travel agencies that offer flight discounts include Orbitz.com, Travelocity.com and Priceline.com. The American Association of Retired Persons and the American Automobile Association provide discounted flight rates exclusively for their members.
Orbitz.com, Travelocity.com and Priceline.com receive their low rates by purchasing tickets that airlines consider unlikely to sell at greatly discounted rates. These online travel agencies pass these low rates on to their customers.
Priceline.com allows customers to place a customized price bid on their tickets, which gives them a chance to get a further discounted rate.
Members of AARP and AAA usually cannot apply their member discounts to other discounted airline rates.