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

Return flights

27 Oct - 31 Oct	United
29 Oct - 31 Oct	United
30 Oct - 03 Nov	United
30 Oct - 04 Nov	United
27 Oct - 01 Nov	United
21 Oct - 28 Oct	United
21 Oct - 30 Oct	United
21 Oct - 29 Oct	United
15 Oct - 22 Oct	American Airlines
24 Oct - 28 Oct	United
09 Oct - 16 Oct	WestJet
14 Oct - 18 Oct	WestJet
13 Oct - 17 Oct	WestJet

Also check the deals for one-way flights from Toronto to San Juan 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 Toronto to San Juan in October from $239

Return flights