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
02 Sep - 09 Sep	Delta
03 Sep - 09 Sep	Delta
15 Sep - 29 Sep	Delta
08 Sep - 29 Sep	Delta
15 Sep - 26 Oct	Delta
16 Sep - 16 Oct	Delta
15 Sep - 23 Sep	Delta
03 Sep - 05 Oct	Delta
16 Sep - 07 Oct	Delta
14 Sep - 22 Oct	Delta
23 Sep - 30 Sep	Delta
24 Sep - 01 Oct	Delta
11 Sep - 03 Oct	Delta
16 Sep - 19 Sep	Delta
04 Sep - 09 Sep	Delta
08 Sep - 21 Sep	Delta
10 Sep - 01 Oct	Ryanair
17 Sep - 08 Oct	Air France
25 Sep - 10 Oct	Delta

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.

Book a cheap hotel in Santiago

Cheap car rent in Santiago

Cheapest return flights from Dublin to Santiago in September from $816

Return flights