In 1977, after two years of legal wrangling, the Anglo-French Concorde began regular flights to New York from London and Paris.

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One, Aerolineas Argentinas, has regular flights to Cuba and has provided aircraft for charter to companies operating flights between the U.S. and Cuba.

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Alitalia, Lufthansa and British Airways expect regular flights to begin shortly.

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McMurdo can accommodate nearly 1, 500 people, but only some 60 to 70 people stay there during the winter, when the extreme weather precludes regular flights, Wing said.

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Regular direct flights began only in July 2008.

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In total, Chinese airlines will have added 1, 373 regular or especially chartered flights on its domestic routes alone.

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And while the Dutch airline started regularly using recycled cooking oil on some commercial flights between Amsterdam and Paris in June 2011, this latest usage represents the first time biofuels will be used on a regular weekly schedule on transatlantic flights.

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The airlines are not prepared to say what fares they will charge, but the 3, 500 regular Concorde users (many of whom fly back first class on subsonic flights after a day's work in America or Europe) are unlikely to be price-sensitive.

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