I highly recommend TRAVEL DE SOCIETY.  We recently purchased a two-way ticket (Florida - Kathmandu - Florida ) from them for $ 1407.  Before that, we talked to people at Peaceland Travels and  World Wide Travels, but it is sad to say that they did not even respond satisfactorily.  They are simply unreliable !   Go for TRAVEL DE SOCIETY !  They are good people !! Their contact information is as follows:

TRAVEL DE SOCIETY

CALIFORNIA,
CA

90650

Phone: 562-261-3222