"All it does is provide information to consumers that is already publicly accessible," the 22-year-old Manhattan resident told CNBC Wednesday.
Zaman founded Skiplagged.com last year as a side project and runs the site alone. It uses a strategy known as "hidden city" to allow a user to book a ticket with a layover in the flyer's actual destination, and the user just skips the last leg of the trip.
He said there is nothing illegal about the strategy and noted that it has been around for a long time. He says he doesn't think it is "ethical for big corporations to suppress this knowledge that is publicly accessible" to consumers. The site does not generate any profit.
United Airlines and Orbitz claim "unfair competition."