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

Return flights

31 Dec - 28 Jan	LATAM Airlines Group
31 Dec - 26 Jan	Avianca
08 Dec - 15 Dec	Royal Air Maroc
02 Dec - 23 Jan	LATAM Airlines Group
31 Dec - 24 Jan	Vueling Airlines
29 Dec - 30 Jan	Ryanair
29 Dec - 28 Jan	Ryanair
08 Dec - 14 Dec	ITA Airways
10 Dec - 13 Jan	Ryanair
10 Dec - 22 Jan	Vueling Airlines
30 Dec - 28 Jan	Vueling Airlines
29 Dec - 20 Jan	Ryanair
01 Dec - 23 Dec	Iberia
07 Dec - 18 Dec	LATAM Airlines Group
16 Dec - 23 Dec	Ryanair
07 Dec - 17 Dec	Vueling Airlines
05 Dec - 29 Dec	Ryanair
04 Dec - 28 Dec	ITA Airways
06 Dec - 29 Dec	Iberia
04 Dec - 27 Dec	ITA Airways

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 1011€

Return flights