AirHint found the following cheapest return flights from Guatemala City (GUA) to San Salvador (SAL) in August 2025 (see full year).

Return flights

13 Aug - 20 Aug	Volaris Costa Rica
13 Aug - 20 Aug	Volaris El Salvador	direct
08 Aug - 15 Aug	Volaris Costa Rica
10 Aug - 17 Aug	Volaris Costa Rica
11 Aug - 18 Aug	Volaris Costa Rica
08 Aug - 15 Aug	Avianca	direct
10 Aug - 17 Aug	Avianca	direct
11 Aug - 18 Aug	Avianca	direct
05 Aug - 07 Aug	Volaris Costa Rica
05 Aug - 07 Aug	Avianca	direct

Also check the deals for one-way flights from Guatemala City to San Salvador 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 Guatemala City to San Salvador in August from 131€

Return flights