An office in this Sycamore, IL, building is where American claims it purchases millions of gallons of jet fuel.

United, American Airlines Accused Of Using Sham Businesses To Avoid Millions In Taxes

Somewhere in Sycamore, IL, about an hour west of Chicago, both United and American Airlines have offices for subsidiary businesses. But some say these offices are nothing more than tax-dodges that help the carriers avoid millions of dollars in taxes each year. [More]