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

Return flights

04 Dec - 17 Dec	LATAM Airlines Group
15 Dec - 28 Jan	Copa
02 Dec - 09 Dec	Viva
16 Dec - 23 Dec	LATAM Airlines Group
22 Dec - 05 Jan	Copa
17 Dec - 05 Jan	Copa
17 Dec - 04 Jan	Copa
17 Dec - 03 Jan	Copa
17 Dec - 06 Jan	Copa
17 Dec - 02 Jan	Copa
19 Dec - 06 Jan	Copa

Also check the deals for one-way flights from Mexico City 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 Mexico City to Asuncion in December from 453€

Return flights