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

Return flights

22 Aug - 29 Aug	Volaris
24 Aug - 29 Aug	United
23 Aug - 28 Aug	Viva
08 Aug - 10 Aug	Volaris
31 Aug - 14 Sep	United
15 Aug - 20 Aug	Viva
26 Aug - 01 Sep	Copa
08 Aug - 13 Aug	Viva
07 Aug - 12 Aug	Viva
13 Aug - 20 Aug	Volaris
01 Aug - 05 Aug	Viva
20 Aug - 26 Aug	Aeromexico

Also check the deals for one-way flights from Guadalajara 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.

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Cheapest return flights from Guadalajara to San Juan in August from 376€

Return flights