AirHint found the following cheapest return flights from Toronto (YYZ) to San Juan (SJU) in January 2026 (see full year).

Return flights

28 Jan - 04 Feb	United
24 Jan - 03 Feb	United
31 Jan - 14 Feb	United
11 Jan - 14 Jan	United
10 Jan - 17 Jan	United
09 Jan - 16 Jan	United
29 Jan - 12 Feb	United
29 Jan - 05 Feb	United
30 Jan - 14 Feb	United
17 Jan - 25 Jan	United
02 Jan - 09 Jan	United
09 Jan - 18 Jan	United
03 Jan - 11 Jan	United
10 Jan - 17 Jan	Air Canada	direct
03 Jan - 11 Jan	Air Canada	direct

Also check the deals for one-way flights from Toronto to San Juan in January.

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 January from $293

Return flights