Hi,

Recently I am working for an academic project (not assignment) that
needs a feature to query the current lowest airfare for a specific
flight, for example from Vancouver to Toronto, only two arguments,
then return an number.

I have been searching the whole internet, I can see many websites are
able to do that. How can they do that?

I couldn't find any available webservice or rssfeed that I can achieve
this.

The project I am working on is kind of like an experiment, we like to
get the result and use a different representation to display it. Can
Yahoo API support this?

Thanks a lot!