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

Return flights

03 Dec - 10 Dec	Aer Lingus	direct
29 Dec - 14 Jan	Aer Lingus	direct
02 Dec - 12 Dec	United
09 Dec - 16 Dec	Lufthansa
02 Dec - 09 Dec	Finnair
08 Dec - 15 Dec	SWISS
10 Dec - 17 Dec	United
06 Dec - 10 Dec	Scandinavian Airlines
01 Dec - 08 Dec	SWISS
01 Dec - 15 Dec	SWISS
02 Dec - 15 Dec	SWISS
28 Dec - 09 Jan	Lufthansa
31 Dec - 07 Jan	Aer Lingus	direct
29 Dec - 24 Jan	SWISS
28 Dec - 21 Jan	Aer Lingus
13 Dec - 31 Jan	United
13 Dec - 07 Jan	TAP
25 Dec - 17 Jan	British Airways
30 Dec - 06 Jan	SWISS
27 Dec - 07 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Dublin in December from 387€

Return flights