Welcome to FT!

You've posted in the wrong forum. You'd have more luck nin the TravelBuzz! forum or, better yet, choose a worldwide alliance and post there (oneworld, SkyTeam, or Star Alliance).

Giving more info will help people help you:
How many continents?
What's your budget?
What class do you want to travel in?
Are you aiming to pick up the most FF miles possible?
Etc.