NOTE: This article is no longer updated. Continental Airlines (CAL) and United Airlines (UAUA) have merged under the ticker symbol and name United Continental Holdings (UAL). Please check that article for updates to the merged company.

United Airlines (Nasdaq:UAUA) is an international airline service. With hubs in Los Angeles, San Francisco, Denver, Chicago and Washington D.C., United operates approximately 3,300 flights per day to over 230 destinations domestically and internationally.^[1] In 2009, United Airlines was the first in on-time performance for scheduled domestic flights, with 81% of all domestic flights arriving approximately on time.^[2] As of December 31, 2009, United Airlines has a 13.7% market share^[3]

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