AirHint found the following cheapest return flights from New York (NYC) to Kathmandu (KTM) in December 2025 (see full year).

Return flights

31 Dec - 24 Jan	SWISS
05 Dec - 20 Dec	Norse Atlantic Airways (UK)
05 Dec - 19 Jan	Norse Atlantic Airways (UK)
08 Dec - 20 Jan	Norse Atlantic Airways (UK)
05 Dec - 21 Jan	Norse Atlantic Airways (UK)
30 Dec - 24 Jan	Lufthansa
07 Dec - 14 Dec	Qatar Airways
30 Dec - 25 Jan	SWISS
04 Dec - 11 Dec	IndiGo
05 Dec - 14 Jan	Norse Atlantic Airways (UK)
04 Dec - 19 Jan	Air Serbia
04 Dec - 21 Jan	Cathay Pacific
08 Dec - 15 Dec	SWISS
11 Dec - 30 Jan	Air Serbia
11 Dec - 19 Dec	Air Serbia
11 Dec - 28 Dec	Air Serbia
14 Dec - 31 Dec	Norse Atlantic Airways
06 Dec - 08 Dec	Singapore Airlines

Also check the deals for one-way flights from New York to Kathmandu in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from New York to Kathmandu in December from 907€

Return flights