The "throw away ticket" approach to saving money on air travel amounts to booking a discounted round-trip ticket but only using one part of it, rather than booking a more expensive one-way fare.
The throw away ticket trick is similar to the back-to-back ticketing plan. It allows travelers to save money by buying a less expensive round-trip ticket and only using one leg of it.
How to Save Money Using the Throw Away Ticket Trick
Like other ticketing ploys, the "throw away ticket" approach isn't something that the airlines like.
The ploy is rather simple: a business traveler simply purchases a discounted round-trip ticket instead of the more expensive, one-way ticket.
An example of "throw away ticketing" ticketing trick would be a business traveler who wants to fly from city A to city B (say New York to Los Angeles). But when checking airfares, the traveler finds out that a round-trip flight from New York to Los Angeles is cheaper than a one-way ticket from New York to Los Angeles. For example, the round trip fair might be $450, while the single, one way fair might be $700.
Business travelers thinking about using the "throw-away ticket" approach would need to make sure they're actually using the first leg of the round trip ticket, not the second leg. That's because airlines will (might) cancel the return flight ticket if the initial ticket wasn't used.
Saving Money and Other Considerations to the Throw Away Ticket Trick
Of course, there are plenty of other ways to save money on airfares, according to About.com's Guide to Budget Travel.
It's also worth noting that this type of trick won't work on many airline flights these days. Airlines continue to tinker with their fares and offerings, and frequently there are no longer discounts for round-trip flights (compared to two one way fares).
Rather than resorting to the throw away the ticket trick, business travelers might be able to save some money on flights if they're flexible.
About.com's guide to Budget Travel has suggestions for ways to save on short notice flights. Travelers who have flexibility may be able to snag discounted airfares or flights by checking out last minute travel websites or considering departing or return to alternative airports.
About.com's Air Travel Expert also has suggestions on the best websites to find discounted airfares on, starting with Google Flights. I love to use Google Flights to check out different flight options and airports, changing dates and times to optimize my travel time and reduce costs. But there are plenty of other great websites, such as www.secretflying.com that can provide discounted airfares as well.