Here's a Quick Search from Kayak from JFK. it was 1251.30 Inclusive everything.

Total airfare, taxes and fees: $ 1251.30
Price Assurance Get our lowest fare or an automatic cash refund.
Tue, Apr 26 Depart: 6:10 pm New York, NY (JFK)
Jet Airways 225
Jet Airways 229
2+ stops
Arrive: 1:45 pm +2 days. Kathmandu, Nepal (KTM)
Jet Airways 7055
operated by JET LITE -- S2 0501

Sun, May 15 Depart: 2:40 pm Kathmandu, Nepal (KTM)
Jet Airways 7056
operated by JET LITE -- S2 0502
Jet Airways 739
2+ stops
Arrive: 12:15 pm next day New York, NY (JFK)
Jet Airways 226