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

Return flights

15 Sep - 28 Sep	Delta
15 Sep - 29 Sep	Delta
17 Sep - 24 Sep	Delta
15 Sep - 23 Sep	Delta
16 Sep - 07 Oct	Delta
22 Sep - 14 Oct	Air France
23 Sep - 02 Oct	Delta
17 Sep - 08 Oct	Ryanair
22 Sep - 02 Oct	Ryanair
22 Sep - 03 Oct	Ryanair
24 Sep - 01 Oct	Air France
19 Sep - 11 Oct	Ryanair
20 Sep - 27 Sep	Vueling Airlines
29 Sep - 02 Oct	Delta
20 Sep - 21 Sep	TAP

Also check the deals for one-way flights from Dublin to Santiago in September.

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 September from 699€

Return flights