This winter WestJet is launching two new routes to Florida, one to Mexico and one to Costa Rica, as well as adding more than 85 flights throughout its domestic and international networks. Additionally, WestJet Encore will launch three-times-daily service between Toronto and Boston.

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JetBlue Airways plans to introduce its Mint premium transcontinental service on its routes linking Boston with San Francisco, Los Angeles and Barbados. It also plans to launch services linking Nashville with Boston and Fort Lauderdale and increase service frequencies on 14 routes from Boston.

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Seattle-based Alaska Airlines, which began selling tickets on June 11 for its routes between Los Angeles and Costa Rica’s two major international airports, is offering introductory one-way fares of $249 from Los Angeles to San José and Liberia.

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Southwest Airlines is planning to launch international service from Houston Hobby Airport to eight cities in Mexico, Central America and the Caribbean this fall.

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Starwood and Desarrollos Hoteleros Guanagaste signed a management agreement to re-flag the Paradisus Playa Conchal Resort in Guanacaste as a Westin. The property will undergo extensive renovations to its 406 suites and all public areas before re-opening in May 2011.

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