AirHint found the following cheapest return flights from Oakland (OAK) to Toronto (YYZ) in October 2025 (see full year).

Return flights

21 Oct - 28 Oct	Alaska Airlines
07 Oct - 15 Oct	Alaska Airlines
28 Oct - 04 Nov	Alaska Airlines
21 Oct - 04 Nov	Alaska Airlines
28 Oct - 15 Nov	Alaska Airlines
28 Oct - 31 Oct	Alaska Airlines
29 Oct - 05 Nov	Alaska Airlines
23 Oct - 08 Nov	Alaska Airlines
27 Oct - 03 Nov	Alaska Airlines
29 Oct - 10 Nov	Alaska Airlines
05 Oct - 01 Nov	Alaska Airlines
05 Oct - 12 Oct	Alaska Airlines
29 Oct - 24 Nov	Alaska Airlines
12 Oct - 16 Oct	Alaska Airlines

Also check the deals for one-way flights from Oakland to Toronto 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 return flights from Oakland to Toronto in October from $379

Return flights