AirHint found the following cheapest return flights from Seattle (SEA) to Kathmandu (KTM) in November 2025 (see full year).
Return flights
| 10 Nov - 21 Nov | Turkish Airlines | ||
| 02 Nov - 18 Nov | Philippine Airlines | ||
| 02 Nov - 17 Nov | Philippine Airlines | ||
| 06 Nov - 04 Dec | Alaska Airlines | ||
| 26 Nov - 16 Dec | Air Canada |
Also check the deals for one-way flights from Seattle to Kathmandu in November.
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