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

Return flights

25 Oct - 02 Nov	Spirit Airlines
01 Oct - 08 Oct	Spirit Airlines
15 Oct - 19 Oct	Spirit Airlines
26 Oct - 02 Nov	Aer Lingus
14 Oct - 21 Oct	Aer Lingus
31 Oct - 01 Nov	Spirit Airlines
11 Oct - 18 Oct	Air France
10 Oct - 17 Oct	Aer Lingus
16 Oct - 23 Oct	Aer Lingus
22 Oct - 29 Oct	Aer Lingus
02 Oct - 09 Oct	Aer Lingus
06 Oct - 13 Oct	Aer Lingus
04 Oct - 11 Oct	Aer Lingus

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 $451

Return flights