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

Return flights

10 Aug - 29 Aug	Air India
05 Aug - 24 Aug	Air India
07 Aug - 28 Sep	Air India
08 Aug - 07 Sep	Air India
11 Aug - 07 Sep	Air India
11 Aug - 10 Sep	Air India
28 Aug - 14 Sep	Air India
10 Aug - 28 Aug	Air India
04 Aug - 22 Aug	Cathay Pacific
03 Aug - 22 Aug	Cathay Pacific
25 Aug - 01 Sep	Cathay Pacific

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

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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Cheapest return flights from San Francisco to Kathmandu in August from $804

Return flights