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

Return flights

09 Dec - 16 Dec	Aer Lingus	direct
14 Dec - 23 Dec	Delta
16 Dec - 23 Dec	Delta
15 Dec - 22 Dec	United
14 Dec - 23 Dec	Aer Lingus	direct
16 Dec - 23 Dec	Aer Lingus	direct
20 Dec - 28 Dec	Aer Lingus	direct
19 Dec - 26 Dec	United
23 Dec - 01 Jan	United
29 Dec - 05 Jan	United
23 Dec - 01 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Nashville 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 Nashville to Dublin in December from 347€

Return flights