Cheapest return flights from Ontario to Kathmandu in December from $1537

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

Return flights

04 Dec - 11 Dec China Airlines
30 Dec - 14 Jan Qatar Airways
07 Dec - 15 Dec Qatar Airways
17 Dec - 23 Dec China Airlines
05 Dec - 12 Dec Alaska Airlines
11 Dec - 15 Dec Qatar Airways
22 Dec - 10 Jan Alaska Airlines
15 Dec - 30 Dec Qatar Airways
12 Dec - 03 Jan Qatar Airways

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

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