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

Return flights

16 Aug - 23 Aug	jetBlue	direct
30 Aug - 03 Sep	Arajet
19 Aug - 24 Aug	Copa
23 Aug - 27 Aug	jetBlue
22 Aug - 26 Aug	Copa
28 Aug - 01 Sep	Copa
15 Aug - 18 Aug	Copa
01 Aug - 21 Aug	Spirit Airlines
01 Aug - 09 Aug	Spirit Airlines
01 Aug - 05 Aug	Spirit Airlines
01 Aug - 19 Aug	Spirit Airlines
15 Aug - 19 Aug	Copa
13 Aug - 03 Sep	Spirit Airlines
27 Aug - 13 Sep	Spirit Airlines
27 Aug - 17 Sep	Spirit Airlines
27 Aug - 03 Sep	Spirit Airlines
22 Aug - 03 Sep	Spirit Airlines
19 Aug - 03 Sep	Spirit Airlines
17 Aug - 03 Sep	Spirit Airlines
15 Aug - 03 Sep	Spirit Airlines

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

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Cheapest return flights from Cancun to San Juan in August from 244€

Return flights