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

Return flights

12 Dec - 16 Dec	Icelandair
07 Dec - 16 Dec	Aer Lingus	direct
27 Dec - 09 Jan	Air Canada
04 Dec - 11 Dec	Aer Lingus	direct
04 Dec - 13 Dec	Spirit Airlines
06 Dec - 13 Dec	Spirit Airlines
04 Dec - 14 Dec	Aer Lingus	direct
06 Dec - 13 Dec	Aer Lingus	direct
16 Dec - 10 Jan	United
08 Dec - 15 Dec	Aer Lingus
12 Dec - 15 Dec	Spirit Airlines
16 Dec - 27 Dec	United
13 Dec - 03 Jan	Spirit Airlines
20 Dec - 01 Jan	Aer Lingus	direct
17 Dec - 06 Jan	Spirit Airlines
21 Dec - 03 Jan	Allegiant Air
20 Dec - 03 Jan	Spirit Airlines
13 Dec - 03 Jan	Aer Lingus	direct
30 Dec - 06 Jan	Aer Lingus
23 Dec - 04 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 412€

Return flights