Virgin America has launched a new interline agreement with Korean Air, allowing the two airlines to offer seamless travel on the networks of both carriers across their respective North American, Asian and South American routes.

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Southwest Airlines is launching new service between Detroit and Las Vegas and subsidiary AirTran Airways is starting service between Des Moines and Chicago Midway, as they extend their flight schedules for travel bookings out through November 2. Other network changes are also occurring.

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The U.S. Department of Transportation has approved American Airlines’ request for a reciprocal codeshare agreement with Hainan Airlines of the People’s Republic of China.

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Alaska Airlines is launching new daily non-stop service between Seattle and Philadelphia on June 11, and daily non-stop flights between Seattle and Fort Lauderdale on July 16.

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New flight schedules released by Southwest Airlines and subsidiary AirTran Airways for August 12 through September 28 show that Southwest will offer new service in nine non-stop markets, including new service from Atlanta to Norfolk and Louisville, while AirTran will launch one new route.

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Southwest Airlines has confirmed its intent to retain AirTran Airways’ operations at an additional 15 U.S. domestic airports and seven international airports, but Southwest is dropping six AirTran destinations. Over time, Southwest will convert AirTran’s flights to Southwest operations at the 53 AirTran cities it has decided to keep.

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American Airlines and China’s Hainan Airlines have agreed to codeshare on each other’s flights and to offer members of their frequent-flyer programs new opportunities to earn and redeem mileage points.

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Alaska Airlines and sister carrier Horizon Air will fly 75 commercial passenger flights in the United States partly powered by biofuel, starting on November 9. The flights will link Seattle-Tacoma International Airport with Washington D.C. and Portland, Oregon.

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Alaska Airlines is launching nonstop daily service between Seattle and Kansas City in Missouri starting March 12, 2012. Meanwhile, sister regional carrier Horizon Air is launching new seasonal service between Palm Springs and San Jose, California starting February 17, 2012.

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The airline will begin serving Dallas/Fort Worth International Airport on February 2 and Seattle-Tacoma International Airport on March 1, offering daily non-stop flights to both destinations. Emirates will also open a new customer lounge at San Francisco International Airport in November.

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Delta’s new club, located on the roof of Seattle-Tacoma International Airport’s South Satellite terminal, measures nearly 8,300 square feet in area and offers a full wall of windows with a view of Mount Rainier.

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Sun Country Airlines has announced details of its late-spring/summer flying schedule, which will see it bring back service to Anchorage, New York JFK, San Francisco and Boston from its Minneapolis-St. Paul base.

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Germany’s Condor Flugdienst GmbH is starting twice-weekly nonstop service between Seattle and Frankfurt on June 23, 2011.

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Alaska Airlines is launching daily service between Seattle and St. Louis on September 27.

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Alaska Airlines is launching daily service between San Diego and Kahului, Maui and its sister regional carrier Horizon Air is starting four-times-daily service between the Silicon Valley-area city of San Jose and Los Angeles.

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Alaska Airlines has launched its new daily nonstop service between Seattle and Atlanta, marking the ninth new market the airline has added this year.

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Alaska Airlines is launching daily service between San Jose, California and Austin, Texas on September 2.

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