AirHint found the following cheapest return flights from San Jose (SJO) to Toronto (YYZ) in September 2025 (see full year).

Return flights

15 Sep - 22 Sep	Spirit Airlines
12 Sep - 20 Sep	Spirit Airlines
11 Sep - 15 Sep	Avianca
17 Sep - 21 Oct	Avianca
09 Sep - 16 Sep	Avianca
13 Sep - 16 Sep	Avianca
05 Sep - 11 Sep	Avianca
12 Sep - 17 Sep	Avianca
12 Sep - 15 Sep	Avianca
07 Sep - 17 Sep	Avianca
12 Sep - 16 Sep	Avianca
01 Sep - 03 Oct	Avianca

Also check the deals for one-way flights from San Jose to Toronto in September.

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 Jose to Toronto in September from 312€

Return flights