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

Return flights

01 Dec - 08 Dec	ITA Airways
31 Dec - 24 Jan	Avianca
30 Dec - 30 Jan	LATAM Airlines Group
01 Dec - 05 Dec	ITA Airways
01 Dec - 14 Dec	ITA Airways
24 Dec - 21 Jan	ITA Airways
02 Dec - 24 Jan	ITA Airways
03 Dec - 08 Dec	LATAM Airlines Group
26 Dec - 30 Jan	LATAM Airlines Group
25 Dec - 30 Jan	Iberia
25 Dec - 21 Jan	Iberia
08 Dec - 14 Jan	LEVEL
28 Dec - 18 Jan	Volotea
12 Dec - 22 Jan	Vueling Airlines
09 Dec - 16 Dec	LEVEL
05 Dec - 27 Dec	Ryanair
11 Dec - 27 Dec	Ryanair
05 Dec - 30 Dec	Air Europa
27 Dec - 30 Dec	LATAM Airlines Group
13 Dec - 18 Dec	LEVEL

Also check the deals for one-way flights from Barcelona to Asuncion in December.

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 December from $1186

Return flights