When we think of a "travel hacker," the instant image that springs to mind is Ryan Bingham, the corporate road warrior memorably portrayed by George Clooney in the film "Up in the Air." Can young people get in on the frequent-flyer game? Yes, says Hao Tran, a college student featured in the Million Mile Secrets...

I stayed away from frequent flyer credit cards for a long time, because I wanted to avoid debt. The other reason was that since I lived in Asia, flights were relatively cheap anyway. Looking back, there were a lot of missed opportunities to earn air miles. Now that I'm back in the States, my situation...

What would you rather have: a million dollars or a million frequent-flyer miles? Airline miles have almost become a new currency. They can be exchanged for hotel stays, car rentals, gift cards, and merchandise. The movie "Up in the Air" with George Clooney brought mainstream attention to "travel hacking." This is how people use their...