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

Return flights

13 Sep - 27 Sep	jetBlue
12 Sep - 27 Sep	jetBlue
15 Sep - 30 Sep	WestJet
16 Sep - 01 Oct	Ryanair
13 Sep - 11 Oct	Ryanair
20 Sep - 11 Oct	Ryanair
15 Sep - 02 Oct	Vueling Airlines
16 Sep - 30 Sep	Ryanair
18 Sep - 02 Oct	Iberia
20 Sep - 18 Oct	Iberia Express
03 Sep - 12 Sep	Iberia Express
13 Sep - 04 Oct	Aer Lingus
27 Sep - 18 Oct	Iberia Express

Also check the deals for one-way flights from Dublin to Rio Negro 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 Rio Negro in September from 703€

Return flights