Moderator: Please feel free to move this to an appropriate forum if needed.

As you all know well, different airlines charge different amount of miles for the exact same flights. For instance, for a business class-trip on Lufthansa for SFO-FRA, Continental charges 105K miles, whereas All Nippon charges only 90K miles (with hefty taxes, of course). The best? Aeroplan requires only 80K miles. And the list can go on and on.

That being said, I am curious whether there is an intelligent search engine/tool that can spin out required miles with major airlines if one just types in two city pairs. We can easily find hidden gems, I guess.

Has anyone encountered a website/program that does this kind of job?