Round-the-world deals

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Airlines are competing to offer discounted air tickets for multi-stop, round-the-world travel. British Airways is running a special on round-the-world tickets. Visit anywhere from three to six continents at your own pace and flexible schedule for economy-class prices starting at $3,900. Details here. Meanwhile, Air New Zealand is offering similar round-the-world fares for as little as $3,104. Details here. These prices are generally lower than what you'd pay by stitching together point-to-point tickets from these airlines. But, if you're willing to sacrifice flexibility for a specific itinerary, turn to round-the-world specialists such as AirTreks.com instead. Airfares from specialists often cost hundreds of dollars less, though they usually have more restrictions.

For advice on how to plan a "RTW" trip from globe-trotting journalist Gayle Forman, click here.

To see the trailer of a new documentary about round-the-world travel, click here.

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