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

Return flights

11 Sep - 04 Oct	jetBlue
13 Sep - 04 Oct	jetBlue
09 Sep - 23 Sep	jetBlue
09 Sep - 16 Sep	jetBlue
10 Sep - 04 Oct	jetBlue
29 Sep - 07 Oct	Scandinavian Airlines
19 Sep - 22 Sep	Spirit Airlines
12 Sep - 21 Sep	jetBlue
15 Sep - 19 Sep	jetBlue
29 Sep - 06 Oct	Scandinavian Airlines
27 Sep - 18 Oct	jetBlue
19 Sep - 25 Sep	American Airlines
22 Sep - 26 Sep	Frontier Airlines
25 Sep - 18 Oct	Spirit Airlines
09 Sep - 23 Sep	Delta	direct
09 Sep - 16 Sep	Air France	direct
10 Sep - 04 Oct	Air France	direct
11 Sep - 04 Oct	Air France	direct
13 Sep - 04 Oct	Air France	direct
12 Sep - 21 Sep	Air France	direct

Also check the deals for one-way flights from Atlanta to Dublin 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 Atlanta to Dublin in September from $556

Return flights