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

Return flights

09 Dec - 18 Dec	Aer Lingus	direct
10 Dec - 14 Jan	KLM
10 Dec - 17 Dec	KLM
04 Dec - 11 Dec	Aer Lingus	direct
11 Dec - 16 Jan	Delta
09 Dec - 09 Jan	KLM
11 Dec - 13 Jan	Air France
12 Dec - 13 Jan	Delta
16 Dec - 23 Dec	Aer Lingus	direct
11 Dec - 12 Jan	Air France
09 Dec - 08 Jan	British Airways
09 Dec - 07 Jan	Air Canada
11 Dec - 09 Jan	United
04 Dec - 14 Dec	Aer Lingus	direct
01 Dec - 15 Dec	United
11 Dec - 10 Jan	Air Canada
01 Dec - 08 Dec	Aer Lingus
01 Dec - 27 Dec	KLM
16 Dec - 27 Dec	United
21 Dec - 31 Dec	Spirit Airlines

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 361€

Return flights