I think casey00 is talking about Delhi - KTM .

Go to jetairways website http://www.jetairways.com/EN/US/Home.aspx and buy it . I bought mine for $224 round trip. Look for web special tickets.

You can also try travelocity or http://www.ixigo.com/ or many others but the cheapest one would be the web special tickets on jet airways offical website