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

Return flights

05 Dec - 21 Jan	Delta
07 Dec - 24 Dec	Delta
03 Dec - 08 Dec	Aer Lingus
01 Dec - 07 Dec	Delta
01 Dec - 27 Dec	Delta
29 Dec - 27 Jan	Delta
29 Dec - 26 Jan	Delta
03 Dec - 13 Dec	Ryanair
29 Dec - 29 Jan	Delta
01 Dec - 11 Dec	SWISS
06 Dec - 13 Dec	Aer Lingus
14 Dec - 27 Dec	Delta
30 Dec - 28 Jan	Delta
28 Dec - 26 Jan	Air Canada
01 Dec - 14 Dec	Ryanair
06 Dec - 16 Dec	Delta
31 Dec - 22 Jan	Lufthansa
11 Dec - 15 Jan	Aer Lingus
26 Dec - 23 Jan	Delta
09 Dec - 14 Jan	Ryanair

Also check the deals for one-way flights from Dublin to Santiago 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 Dublin to Santiago in December from 697€

Return flights