AirHint found the following cheapest return flights from San Francisco (SFO) to Kathmandu (KTM) in September 2026 (see full year).
Return flights
| 01 Sep - 16 Sep | ITA Airways | ||
| 01 Sep - 17 Sep | Alaska Airlines | ||
| 24 Sep - 25 Oct | Alaska Airlines | ||
| 04 Sep - 26 Sep | Alaska Airlines | ||
| 24 Sep - 31 Oct | Turkish Airlines |
Also check the deals for one-way flights from San Francisco to Kathmandu in September.
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