AirHint found the following cheapest return flights from Indianapolis (IND) to Dublin (DUB) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	Aer Lingus	direct
06 Dec - 13 Dec	Aer Lingus	direct
16 Dec - 23 Dec	United
26 Dec - 31 Dec	Aer Lingus	direct
29 Dec - 02 Jan	Aer Lingus	direct
27 Dec - 03 Jan	Aer Lingus	direct
27 Dec - 01 Jan	Air Canada
20 Dec - 27 Dec	Air Canada
26 Dec - 02 Jan	United
20 Dec - 27 Dec	Aer Lingus	direct

Also check the deals for one-way flights from Indianapolis to Dublin in December.

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 Indianapolis to Dublin in December from $449

Return flights