Originally Posted by number_6

There is roughly +/- 30% differential in price from various countries of origin. Most of Europe is currently more expensive than the US. Canada used to be cheaper but is now more expensive than the US. The cheap starting locations are all somewhat out of the way and difficult to reach. The fares at the popular, easy to reach locations have been increased. So if you want a cheap fare, be prepared to make a special trip to start there and to spend some time arranging it....won't be easy, but will save you thousands of dollars. The first step in this journey is to install a free spreadsheet program so you can look at the .xls file with the fares. You don't have to buy one, lots of free ones on the web. The fares are too complicated and have too many variations to describe (the cheapest 3 continent fare isn't at the same location as the cheapest 4 continent fare, for example, so it all depends what routing you want to take).

For a free Excel viewer from Microsoft, see http://www.microsoft.com/downloads/d...displaylang=EN

(you can view but not use the spreadsheet).