Cheapest return flights from San Francisco to Kathmandu in September from $944

AirHint found the following cheapest return flights from San Francisco (SFO) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

15 Sep - 23 Sep Cathay Pacific
13 Sep - 20 Sep IndiGo
12 Sep - 19 Sep China Southern
19 Sep - 13 Oct SWISS
23 Sep - 08 Oct China Southern
25 Sep - 14 Oct Cathay Pacific
19 Sep - 10 Oct Qatar Airways
25 Sep - 28 Oct Cathay Pacific
26 Sep - 26 Oct Cathay Pacific

Also check the deals for one-way flights from San Francisco to Kathmandu in September.

Skyscanner

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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