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

Return flights

05 Dec - 16 Dec	Iberia
02 Dec - 10 Dec	Iberia
03 Dec - 09 Dec	Iberia
05 Dec - 15 Dec	Iberia
02 Dec - 12 Dec	Iberia
29 Dec - 20 Jan	Iberia
04 Dec - 11 Dec	Iberia
02 Dec - 08 Dec	Iberia
04 Dec - 15 Dec	Iberia
15 Dec - 17 Jan	British Airways
04 Dec - 14 Dec	Iberia
05 Dec - 14 Dec	Iberia
28 Dec - 20 Jan	Air France
28 Dec - 21 Jan	Air France
28 Dec - 12 Jan	Delta
28 Dec - 13 Jan	Delta
13 Dec - 10 Jan	Viva
28 Dec - 08 Jan	Delta
27 Dec - 13 Jan	Iberia
23 Dec - 07 Jan	Delta

Also check the deals for one-way flights from Mexico City to Dublin 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 Dublin in December from $693

Return flights