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

Return flights

30 Jun - 15 Jul	Spirit Airlines
29 Jun - 15 Jul	Spirit Airlines
30 Jun - 19 Jul	Spirit Airlines
30 Jun - 11 Jul	Spirit Airlines
30 Jun - 17 Jul	Spirit Airlines
30 Jun - 12 Jul	Spirit Airlines
29 Jun - 19 Jul	Spirit Airlines
29 Jun - 11 Jul	Spirit Airlines
29 Jun - 17 Jul	Spirit Airlines
29 Jun - 12 Jul	Spirit Airlines
29 Jun - 30 Jun	Spirit Airlines

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

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 San Juan to Cancun in June from $313

Return flights