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

Return flights

19 Aug - 29 Aug	Avianca
31 Aug - 10 Sep	Copa
31 Aug - 13 Sep	Copa
18 Aug - 29 Aug	Avianca
19 Aug - 28 Aug	Avianca
17 Aug - 29 Aug	Avianca
04 Aug - 08 Aug	Copa
17 Aug - 28 Aug	Copa
05 Aug - 14 Aug	Copa
04 Aug - 11 Aug	Avianca
17 Aug - 24 Aug	Avianca
01 Aug - 12 Aug	Avianca

Also check the deals for one-way flights from San Salvador to Asuncion 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 Asuncion

Cheap car rent in Asuncion

Cheapest return flights from San Salvador to Asuncion in August from 590€

Return flights