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

One-Way flights

11 Dec	United
06 Dec	United
05 Dec	Porter Airlines (Canada) Ltd
14 Dec	WestJet	direct
13 Dec	United
04 Dec	Porter Airlines (Canada) Ltd
17 Dec	Porter Airlines (Canada) Ltd
18 Dec	Flair Airlines
21 Dec	Porter Airlines (Canada) Ltd
19 Dec	WestJet

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 131€

One-Way flights