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

Return flights

30 Sep - 21 Oct	Aer Lingus	direct
30 Sep - 12 Oct	United
28 Sep - 05 Oct	Delta
29 Sep - 06 Oct	Delta
25 Sep - 29 Sep	Frontier Airlines
25 Sep - 30 Sep	Frontier Airlines
28 Sep - 05 Oct	Aer Lingus	direct
22 Sep - 29 Sep	Frontier Airlines
25 Sep - 18 Oct	Frontier Airlines
19 Sep - 11 Oct	Frontier Airlines
30 Sep - 12 Oct	Aer Lingus	direct
26 Sep - 03 Oct	Delta
26 Sep - 01 Oct	Aer Lingus
22 Sep - 29 Sep	Aer Lingus	direct
25 Sep - 30 Sep	Aer Lingus	direct

Also check the deals for one-way flights from Cleveland 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 Cleveland to Dublin in September from 444€

Return flights