ATLANTA, July 1 /PRNewswire-FirstCall/ -- Travelers with Delta SkyMiles Credit Cards can now earn double miles on all Delta Air Lines (NYSE: DAL) and Northwest Airlines flights from July 1 through Dec. 31, 2009.

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New and existing cardmembers should register at deltadoublemiles.com on or before Sept. 30, 2009. They can then fly any Delta or Northwest flight on or before Dec. 31, 2009 to earn double flown miles. Qualified members are not required to purchase their ticket with their Delta SkyMiles Credit Card to be eligible for the bonus, and all flown travel between July 1 through Dec. 31, 2009, including previously booked travel, will earn double miles.

"In one of our longest and richest promotions ever, Delta SkyMiles Credit Cardmembers can receive double flown miles for the next six months, plus all the other great card benefits they usually enjoy," said Jeff Robertson, Delta's vice president of loyalty programs. "Additionally, our merger with Northwest creates the world's largest airline and enables members to earn miles on more than 16,000 flights daily and redeem them for travel to more than 382 destinations across six continents."

New customers interested in getting a Delta SkyMiles Credit Card can register for the promotion at deltadoublemiles.com and then apply for the card.

The award-winning Delta SkyMiles program offers members multiple mileage-earning opportunities when flying Delta, Delta Shuttle, the Delta Connection carriers, Delta AirElite and other SkyTeam airlines. Additional mileage-building opportunities are offered through more than 100 partners such as the Delta SkyMiles Credit Card from American Express, participating hotels, car rental companies, the SkyMiles Store, restaurants, SkyMilesShopping.com, floral and gift retailers and more. Now in its 28th year, SkyMiles is one of the longest-running and most successful loyalty programs in the travel industry. It was named "Best Domestic Frequent Flyer program" for 2007 and 2008 by readers of Executive Traveler magazine and "Best Frequent Flyer Program" for 2006 and 2007 by Business Traveller magazine.

Delta Air Lines is the world's No. 1 airline. From its hubs in Atlanta, Cincinnati, Detroit, Memphis, Minneapolis-St. Paul, New York-JFK, Salt Lake City, Paris-Charles de Gaulle, Amsterdam and Tokyo-Narita, Delta, its Northwest subsidiary and Delta Connection carriers offer service to 382 destinations in 69 countries and serves more than 170 million passengers each year. Delta's marketing alliances allow customers to earn and redeem either SkyMiles or WorldPerks on more than 16,000 daily flights offered by SkyTeam and other partners. Delta's more than 70,000 employees worldwide are reshaping the aviation industry as the only U.S. airline to offer a full global network. Customers can check in for flights, print boarding passes, check bags and flight status at delta.com.

Terms and Conditions

Earn double Bonus Miles flown on all qualifying Delta and Northwest marketed and operated paid flights flown between July 1 and December 31, 2009. Offer open only to new and existing Basic Delta SkyMiles Credit Cardmembers from American Express who register by September 30, 2009. The WorldPerks/SkyMiles account registered for this promotion and associated with the primary Delta SkyMiles Credit Card account is the only account eligible to earn double Bonus Miles. Qualifying travel must be completed by December 31, 2009. A qualifying flight includes any Delta, Northwest, or Delta Connection carrier flight. Codeshare flights operated by other carriers are excluded. Travel must be on a paid published fare. WorldPerks members will earn Bonus Miles in the WorldPerks program only up until the WorldPerks program is merged with the SkyMiles program, and thereafter will earn SkyMiles. Double Bonus Miles do not count toward Elite qualification. Bonus miles will appear automatically on members' statements. Members should allow up to four to six weeks after qualifying travel is completed for Bonus Miles to appear. This offer may not be combined with any other offers. Additional restrictions may apply. Offer subject to change without notice. All SkyMiles and WorldPerks program rules apply. To review the rules, please visit delta.com/memberguide and nwa.com/worldperks .

SOURCE: Delta Air Lines

Web site: http://www.delta.com/