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

Return flights

25 Aug - 25 Sep	Air France
20 Aug - 08 Sep	Air France
20 Aug - 07 Sep	Air France
25 Aug - 04 Sep	LATAM Airlines Group
25 Aug - 09 Sep	Air France
16 Aug - 06 Sep	KLM
23 Aug - 13 Sep	LATAM Airlines Group
28 Aug - 15 Sep	Ryanair
17 Aug - 06 Sep	KLM
18 Aug - 06 Sep	KLM
24 Aug - 31 Aug	Air Europa
18 Aug - 30 Aug	KLM
19 Aug - 26 Aug	Air Europa
18 Aug - 24 Aug	Ryanair
16 Aug - 23 Aug	Air Europa
17 Aug - 23 Aug	Iberia
16 Aug - 30 Aug	Ryanair

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

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Cheapest return flights from Barcelona to Asuncion in August from 826€

Return flights