Cheapest return flights from Ontario to San Juan in January from 441€

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

Return flights

20 Jan - 25 Jan Southwest Airlines
25 Jan - 01 Feb Southwest Airlines
11 Jan - 25 Jan Southwest Airlines
18 Jan - 25 Jan Southwest Airlines
18 Jan - 01 Feb Southwest Airlines
25 Jan - 08 Feb Southwest Airlines
04 Jan - 11 Jan Southwest Airlines
16 Jan - 20 Jan Southwest Airlines
02 Jan - 12 Jan Southwest Airlines
04 Jan - 09 Jan Southwest Airlines
07 Jan - 11 Jan Southwest Airlines
29 Jan - 14 Feb Southwest Airlines
11 Jan - 18 Jan Southwest Airlines
04 Jan - 18 Jan Southwest Airlines

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

Skyscanner

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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