For business and premium class fares, the duty could be anything up to twice these amounts.

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The airline launched nonstop U.S. flights offering both business-class and a premium-type coach cabin.

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Many companies with bans on business class travel have embraced premium economy as a way to offer employees a bit more space and comfort to rest or work without breaking the budget.

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Of course, if you want to sit in first or business class, plan to pay a premium for it no matter when you buy the ticket.

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On an airline with a "premium economy" cabin, like Air New Zealand, coach customers bid to upgrade to premium economy and premium-economy passengers to business class.

WSJ: El Al, Virgin Atlantic Are Airlines That Auction Upgrades to Business Class

In the end it was the halving of premium travel (supersonic, first class and business class) thanks to economic slow-down, terrorism and the Iraq war that sealed its fate.

ECONOMIST: Air travel: After Concorde | The

But I do fly 250, 000 miles a year, nearly all of it ticketed at a premium price: full-fare coach, business or first class.

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Demand for first class and business class typically follows business confidence, according to the International Air Transport Association, which publishes a monthly premium traffic report.

WSJ: El Al, Virgin Atlantic Are Airlines That Auction Upgrades to Business Class