AirHint found the following cheapest one-way flights from Delhi (DEL) to San Francisco (SFO) in October 2025 (see full year).

One-Way flights

07 Oct	Vietnam Airlines
14 Oct	Vietnam Airlines
08 Oct	Singapore Airlines
19 Oct	Singapore Airlines
14 Oct	Air India	direct
18 Oct	Air India	direct
08 Oct	Air India	direct
31 Oct	Air India	direct
17 Oct	Air India	direct
15 Oct	Air India	direct

Also check the deals for return flights from Delhi to San Francisco in October.

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 one-way flights from Delhi to San Francisco in October from $381

One-Way flights