The NYTimes with a tip on one way to find cheaper airfares. It's called hidden-city ticketing.

Well, there’s a way to save some of that money. It’s called “hidden-city ticketing,” but before I explain how to execute the maneuver, you’re going to need some background. Passengers flying to or from airports that are dominated by a single carrier — like Memphis, Newark or Dallas/Fort Worth — pay fares 20 or 30 percent higher than at non-hub airports. The prices are even more inflated when you’re flying from a smaller city with a limited number of flights. A nonstop one-way ticket from Des Moines to Dallas/Fort Worth is $375 on American Airlines, for example — more than the $335 Delta will charge you to fly from Miami to Anchorage.

But what happens when you’re interested in flying American from Des Moines to Los Angeles, which hosts a more competitive airport? That flight is only about half the price ($186), despite its being more than double the distance. Now, here’s the trick: American flights from Des Moines to L.A. have a layover in Dallas. If you want to travel to Dallas, the best way to get a reasonable fare is to book the flight to Los Angeles instead, and simply get off the plane at Dallas.

Making a habit of this certainly won’t endear you to the airlines. Most of them — the major exception being free-spirited Southwest Airlines — expressly forbid it in their ticketing rules. But those rules don’t carry the force of law, and most travel lawyers say that their recourse is limited. They could probably preclude you from flying with them in the future, but their case for demanding penalties is weak, and the risk of detection is low if you don’t book these kinds of routes more often than a couple of times per carrier per year.

Fly Shortcut is an airfare search engine focused specifically on this pricing loophole. Has anyone tried this technique or Fly Shortcut?

UPDATE: United Airlines and Orbitz are suing the travel website Skiplagged over this loophole, and that lawsuit has put Fly Shortcut into hibernation for now as well.