Cheapest one-way flights from Cancun to San Juan in August from $143

AirHint found the following cheapest one-way flights from Cancun (CUN) to San Juan (SJU) in August 2025 (see full year).

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.