CHICAGO, April 18, 2011 /PRNewswire/ -- United Continental Holdings, Inc. (NYSE: UAL) today announced that for every customer who uses a mobile boarding document on Earth Day, the company will donate $1 to help Protect an Acre with its global nonprofit partner Conservation International.* For customers who use the Continental Mobile App for Android® or iPhone®, the company will double the contribution to $2. Conservation International's Protect an Acre program works to curb tropical deforestation, a leading cause of climate change, while preserving the livelihoods of local communities and the natural habitats of threatened species.

"At the new United, we are taking responsible actions to reduce our impact on the environment," said Toby Enqvist, vice president of environmental affairs and security for United. "Using a mobile boarding pass is a tangible way our customers can join us in our commitment to environmental and social responsibility."

"We greatly appreciate United and Continental's commitment to contribute up to $2 to Conservation International's Protect an Acre program for every customer who uses the paperless mobile boarding option on Earth Day," said Justin Ward, vice president in Conservation International's Center for Environmental Leadership in Business.

More than 10 million customers have used their cell phone or PDA at 89 domestic and international airports equipped to accept mobile boarding passes since the airlines introduced the program in 2007. United and Continental customers have saved approximately 1,200 trees by opting to board using a mobile device in lieu of a printed boarding pass.

Customers scheduled to travel on Friday, April 22 are encouraged to select the mobile boarding pass delivery method when they check in for their flight. For more information about the company's commitment to the environment and its Earth Day promotion, visit united.com/eco-skies and continental.com/eco-skies.

About United Continental Holdings, Inc.

United Continental Holdings, Inc. (NYSE: UAL) is the holding company for both United Airlines and Continental Airlines. Together with United Express, Continental Express and Continental Connection, these airlines operate an average of 5,820 flights a day to 373 airports on six continents from their hubs in Chicago, Cleveland, Denver, Guam, Houston, Los Angeles, New York/Newark Liberty, San Francisco, Tokyo and Washington, D.C. United and Continental are members of Star Alliance, which offers 21,000 daily flights to 1,160 airports in 181 countries. United and Continental's more than 80,000 employees reside in every U.S. state and in many countries around the world. For more information about United Continental Holdings, Inc., go to UnitedContinentalHoldings.com. For more information about the airlines, see united.com and continental.com, and follow each company on Twitter and Facebook.

* Terms and conditions:
United Continental Holdings will contribute to Conservation International's Protect an Acre program as part of this promotion matching each use of mobile boarding pass on Earth Day, Friday, April 22, 2011, with a $1 contribution and $2 for each use of the Continental Mobile App for Android® or iPhone® up to a maximum of $50,000 for the combined company representing both United and Continental subsidiaries. Mobile boarding documents are sent directly to your mobile device by e-mail for qualifying itineraries. Standard data rates apply. Offer subject to change.

SOURCE United Continental Holdings, Inc.