AirHint found the following cheapest return flights from Columbus (CMH) to Dublin (DUB) in August 2025 (see full year).

Return flights

12 Aug - 19 Aug	United
05 Aug - 12 Aug	United
06 Aug - 13 Aug	United
26 Aug - 02 Sep	United
14 Aug - 21 Aug	United
16 Aug - 19 Aug	Aer Lingus
08 Aug - 15 Aug	United
22 Aug - 29 Aug	United
10 Aug - 17 Aug	United
18 Aug - 25 Aug	United
04 Aug - 11 Aug	United
28 Aug - 09 Sep	United
28 Aug - 04 Sep	United
30 Aug - 06 Sep	United

Also check the deals for one-way flights from Columbus to Dublin in August.

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 Columbus to Dublin in August from 486€

Return flights