AirHint found the following cheapest return flights from San Jose (SJC) to Sydney (SYD) in October 2025 (see full year).

Return flights

09 Oct - 23 Oct	Alaska Airlines
06 Oct - 21 Oct	Hawaiian Airlines
08 Oct - 14 Oct	Hawaiian Airlines
16 Oct - 21 Oct	Hawaiian Airlines
15 Oct - 02 Nov	Alaska Airlines
30 Oct - 08 Nov	Hawaiian Airlines
16 Oct - 25 Oct	Alaska Airlines
18 Oct - 15 Nov	Hawaiian Airlines
04 Oct - 14 Oct	Hawaiian Airlines
15 Oct - 30 Oct	Alaska Airlines
14 Oct - 30 Oct	Alaska Airlines
01 Oct - 17 Oct	Hawaiian Airlines
22 Oct - 29 Oct	Alaska Airlines

Also check the deals for one-way flights from San Jose to Sydney 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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from San Jose to Sydney in October from $1037

Return flights