I am traveling around the world. I need to book over 15 flights at once. The only site I found that can do this is star alliance. But they only offer locations star alliance airlines fly to and that's no good for me. Looking for a website that allows you to book many flights at once. If that is not a possibility can someone suggest something? I need something like this.

Or a regular site that can allow me to do this. Thank You in advance, please let me know if there is something else that I can do.

May I add, I have done something like this years ago so there must be something somewhere. I appreciate the help.