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

Return flights

29 Dec - 25 Jan	Cathay Pacific
28 Dec - 25 Jan	Cathay Pacific
08 Dec - 13 Jan	Kuwait Airways
10 Dec - 17 Dec	Turkish Airlines
11 Dec - 18 Dec	Turkish Airlines
25 Dec - 11 Jan	Kuwait Airways
11 Dec - 11 Jan	Kuwait Airways
12 Dec - 12 Jan	Lufthansa
16 Dec - 15 Jan	Lufthansa
15 Dec - 26 Dec	TAP
18 Dec - 18 Jan	Air Serbia
26 Dec - 09 Jan	Cathay Pacific
20 Dec - 27 Dec	SWISS

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 $800

Return flights