AirHint found the following cheapest return flights from Cancun (CUN) to Asuncion (ASU) in December 2025 (see full year).
Return flights
| 04 Dec - 31 Dec | Copa | ||
| 29 Dec - 04 Jan | Copa | ||
| 21 Dec - 21 Jan | LATAM Airlines Group | ||
| 11 Dec - 13 Jan | Copa | ||
| 15 Dec - 22 Dec | Copa | ||
| 14 Dec - 17 Jan | Avianca |
Also check the deals for one-way flights from Cancun to Asuncion in December.
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