Orbitz Joins Red Hat for Opening Keynote at LinuxWorld

Raleigh

United States, July 28, 2004

Red Hat customer will kick off keynote with highlights from the Orbitz migration to open source; Red Hat CEO Matthew Szulik to deliver main address.

Red Hat, Inc. (Nasdaq:RHAT), the world's premier open source and Linux provider, announced today that Chris Hjelm, Orbitz Chief Technology Officer will join Matthew Szulik, Red Hat Chairman, Chief Executive Officer and President, to deliver the opening keynote address at LinuxWorld Conference and Expo in San Francisco. The keynote will take place on Tuesday, August 3, at 9:15 a.m. in the Moscone Center.

Orbitz, a leading online travel company, is known for offering leisure and business travelers the widest selection of low airfares, as well as deals on lodging, car rentals, cruises, vacation packages and other travel.

"With more than 23 million unique users and a growing product portfolio, innovative technology is essential to Orbitz," said Hjelm. "Open source technology is a key enabler to speed-to-market, availability and reliability."

"Our low fare search engine runs on literally hundreds of Red Hat Enterprise Linux servers, and that technology allows us to return more results," says Hjelm. "The depth and breadth of our offerings are facilitated by the technology we've put in place."

Following Hjelm's remarks, Matthew Szulik will deliver the keynote entitled 'Freedom of Choice'. Throughout history customer choice has transformed entire industries. When customers are given choice rather than forced to settle on the status quo, the results can be powerful. Superior quality and service, diversity, innovation and increased performance are all derived from choice.

Red Hat will showcase enterprise Linux solutions with key partners and customers during the LinuxWorld Conference and Expo. For more information on Red Hat events and exhibits, please visihttp://www.redhat.com or visit booth 563.

About Orbitz

Orbitz, Inc. became a publicly traded company on Dec. 17, 2003, when its shares were listed on NASDAQ under the ticker symbol ORBZ. Orbitz is a leading online travel company that enables travelers to search for and purchase a broad array of travel products, including airline tickets, lodging, rental cars, cruises and vacation packages. Since launching its website in June 2001, Orbitz has become the third largest online travel site based on gross travel bookings. On Orbitz, consumers can search more than 455 airlines, as well as rates at over 45,000 lodging properties and at 23 car rental companies. For more information, visit www.orbitz.com.

About Red Hat, Inc.

Red Hat, the world's leading open source and Linux provider, is headquartered in Raleigh, NC with satellite offices spanning the globe. Red Hat is leading Linux and open source solutions into the mainstream by making high quality, low cost technology accessible. Red Hat provides operating system software along with middleware, applications and management solutions. Red Hat also offers support, training and consulting services to its customers worldwide and through top-tier partnerships. Red Hat's open source strategy offers customers a long term plan for building infrastructures that are based on and leverage open source technologies with focus on security and ease of management. Learn more: http://www.redhat.com

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