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

Return flights

25 Oct - 01 Nov	Spirit Airlines
06 Oct - 15 Oct	Spirit Airlines
22 Oct - 12 Nov	Air Canada
21 Oct - 11 Nov	Air Canada
25 Oct - 02 Nov	Air Canada
27 Oct - 03 Nov	United
14 Oct - 28 Oct	Spirit Airlines
01 Oct - 08 Oct	Scandinavian Airlines
15 Oct - 29 Oct	Air Canada
14 Oct - 21 Oct	United
08 Oct - 15 Oct	United
22 Oct - 29 Oct	United
16 Oct - 24 Oct	KLM
17 Oct - 24 Oct	United
11 Oct - 18 Oct	United

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

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 October from $454

Return flights