Cheapest return flights from Ontario to San Juan in July from $429

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 July 2025 (see full year).

Return flights

19 Jul - 26 Jul United
08 Jul - 23 Jul Southwest Airlines
16 Jul - 23 Jul Southwest Airlines
18 Jul - 22 Jul Southwest Airlines
08 Jul - 15 Jul Southwest Airlines
21 Jul - 31 Jul Southwest Airlines
25 Jul - 29 Jul Southwest Airlines
29 Jul - 05 Aug Southwest Airlines
13 Jul - 19 Jul Southwest Airlines
07 Jul - 18 Jul United
19 Jul - 24 Jul Southwest Airlines
31 Jul - 04 Aug Southwest Airlines
31 Jul - 03 Aug Southwest Airlines

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

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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