Hipmunk's visualization is pretty badass... BUT it's one airport to one airport.
If you could draw lines from each starting point to each ending point with a price range of the flights available then you are solving a different problem.
You are visualizing that the trip from Tampa to Hawaii could be much cheaper if I drove to Orlando. If that 2 hour drive saves me $500 per ticket then it might be worth it.
If I were to pick it up again, that would be the plan. However, the big roadblock is that the data for times and prices if very very expensive. And I simply don't have the resources to pay for it.
If you could draw lines from each starting point to each ending point with a price range of the flights available then you are solving a different problem.
You are visualizing that the trip from Tampa to Hawaii could be much cheaper if I drove to Orlando. If that 2 hour drive saves me $500 per ticket then it might be worth it.
Just a thought.