BTN's 2009 Corporate Travel Index: Domestic Business Travel Pricing Growth Slows | btnonline.com

New York, Washington, D.C., Boston, San Francisco and Chicago are the most expensive U.S. cities in which to travel to conduct business, according to Business Travel News' examination of the daily costs to stay in a hotel, eat three meals and rent a car in 100 business travel destinations in the United States. Hotel, rental car and dining costs registered only modest increases when compared with BTN's 2008 Corporate Travel Index.