Cheapest return flights from Boston to Kathmandu in December from 795€

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

Return flights

02 Dec - 16 Dec SWISS
13 Dec - 29 Dec Lufthansa
03 Dec - 29 Dec Cathay Pacific
10 Dec - 21 Jan Cathay Pacific
12 Dec - 30 Dec Turkish Airlines
13 Dec - 27 Dec Turkish Airlines
13 Dec - 28 Dec Turkish Airlines
13 Dec - 09 Jan Cathay Pacific
14 Dec - 15 Jan Emirates

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

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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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