Spirit Airlines is launching daily service on four new routes starting April 25, with three of the routes expected to be year-round and the fourth operating until November 6.

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Virgin America is launching three-times-daily service to Las Vegas McCarran International Airport from Los Angeles International Airport on April 22.

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Dallas-based Southwest Airlines starts service in Wichita on June 2, 2013, with a total of five daily flights offering non-stop service to Dallas, Chicago Midway, and Las Vegas. Wichita will be Southwest’s 85th destination.

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The airline is operating its three-times-weekly service between London Gatwick Airport and Las Vegas with three-class Boeing 777-200ER widebodies featuring Club World (business class), World Traveller Plus (premium economy) and World Traveller (economy class) cabins.

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Two of the new routes are from Houston George Bush Intercontinental Airport – to Chicago O’Hare International Airport and to Las Vegas. The third is between Denver International Airport and Phoenix-Mesa Gateway Airport. Spirit is also launching service between Portland, Oregon and San Diego.

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Air Berlin launched twice-weekly Dusseldorf-Las Vegas service on May 10, and thrice-weekly Berlin-Los Angeles service on May 11. It will also upgrade its seasonal Dusseldorf-Los Angeles service to year-round and is upping its Dusseldorf-Miami schedule from four to six round-trips weekly.

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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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On May 31 and June 1, Spirit Airlines will begin operating three daily non-stop round-trips between Minneapolis-St. Paul and Chicago O’Hare International Airport, and daily non-stop service between Minneapolis-St. Paul and Las Vegas McCarran International Airport.

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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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Southwest Airlines and its wholly owned subsidiary AirTran Airways have received route authority from the U.S. Department of Transportation for AirTran to operate international flights to new destinations in Mexico.

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The airline is offering introductory fares from $51.99 (plus government fees) between Newport News and Orlando Sanford, as well as introductory one-way fares from $84.99 (again before government fees) between Lexington and Las Vegas.

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Allegiant Air has begun twice-weekly non-stop service between Owensboro in Kentucky and Las Vegas and is offering one-way fares from $86.99 plus taxes between the two cities for bookings made by October 19.

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Allegiant Air is launching six-times weekly nonstop jet service between Las Vegas and Mesa in Arizona on November 17.

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The carrier will add a daily round-trip between Atlanta and Las Vegas, and a daily Atlanta-Phoenix round-trip, for travel beginning March 10, 2012. Introductory-fare tickets for the new services are available from September 5.

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Allegiant Air is launching twice-weekly nonstop service between Lexington, Kentucky and Las Vegas on November 16, using Boeing 757-200s.

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Canadian carrier WestJet is launching seasonal service to new sun destinations from Kelowna, Victoria, Winnipeg, London and Thunder Bay as part of its winter 2011-2012 flight schedule.

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Southwest Airlines has more than doubled the number of its destinations which are able to connect to Mexico flights, through both Chicago Midway and Las Vegas, via the Dallas airline’s marketing and interline agreement with Mexican low-cost carrier Volaris Airlines.

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On June 1, Vision Airlines will begin offering scheduled services to Northwest Florida Regional from Fort Lauderdale; Lafayette in Lousiana; Las Vegas (on a one-stop basis via Baton Rouge, Louisiana); Greater Memphis, through Tunica Municipal Airport in Mississippi; and St. Louis.

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Mexican low-cost airline Volaris is launching daily service between Guadalajara in Jalisco state and Las Vegas on March 30.

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