AirHint found the following cheapest one-way flights from Toronto (YYZ) to San Juan (SJU) in December 2025 (see full year).

One-Way flights

14 Dec	WestJet	direct
01 Dec	United
11 Dec	Porter Airlines (Canada) Ltd
06 Dec	Porter Airlines (Canada) Ltd
24 Dec	WestJet
21 Dec	WestJet
27 Dec	Flair Airlines
20 Dec	WestJet
06 Dec	Air Canada	direct
21 Dec	Air Canada	direct

Also check the deals for return flights from Toronto to San Juan in December.

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 Toronto to San Juan in December from 111€

One-Way flights