Cheapest return flights from Washington to Kathmandu in December from $1033

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

Return flights

02 Dec - 16 Dec Turkish Airlines
01 Dec - 08 Dec Qatar Airways
05 Dec - 20 Dec IndiGo
27 Dec - 13 Jan SWISS
26 Dec - 14 Jan Turkish Airlines
07 Dec - 29 Dec Turkish Airlines
07 Dec - 10 Jan Turkish Airlines
24 Dec - 28 Dec Turkish Airlines
10 Dec - 11 Jan TAP
27 Dec - 10 Jan Saudia
01 Dec - 05 Jan Turkish Airlines
13 Dec - 29 Dec Turkish Airlines
13 Dec - 31 Dec SWISS
26 Dec - 10 Jan Turkish Airlines
13 Dec - 11 Jan SWISS
24 Dec - 10 Jan Turkish Airlines
16 Dec - 03 Jan Frontier Airlines
19 Dec - 26 Dec Emirates

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

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