Cheapest return flights from Ontario to San Juan in June from $467

Best time to book flights for Ontario (ONT) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to San Juan (SJU) in June 2025 (see full year).

Return flights

04 Jun - 11 Jun Frontier Airlines
11 Jun - 17 Jun Southwest Airlines
04 Jun - 13 Jun jetBlue
11 Jun - 16 Jun Southwest Airlines
01 Jun - 06 Jun United
05 Jun - 11 Jun Southwest Airlines
04 Jun - 09 Jun Southwest Airlines
30 Jun - 07 Jul Southwest Airlines
18 Jun - 24 Jun Southwest Airlines
12 Jun - 16 Jun Southwest Airlines
19 Jun - 04 Jul Southwest Airlines
20 Jun - 08 Jul Southwest Airlines
19 Jun - 26 Jun Southwest Airlines
27 Jun - 07 Jul Southwest Airlines
11 Jun - 29 Jul jetBlue
21 Jun - 06 Jul Southwest Airlines
20 Jun - 07 Jul Southwest Airlines
20 Jun - 06 Jul Southwest Airlines

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

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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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