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

Return flights

02 Dec - 06 Dec	Spirit Airlines
09 Dec - 16 Dec	Aer Lingus	direct
11 Dec - 13 Dec	Hawaiian Airlines
12 Dec - 14 Dec	Frontier Airlines
13 Dec - 06 Jan	Frontier Airlines
07 Dec - 14 Dec	Aer Lingus
03 Dec - 10 Dec	Alaska Airlines
31 Dec - 07 Jan	Alaska Airlines
13 Dec - 06 Jan	Aer Lingus	direct
23 Dec - 30 Dec	Air Canada
01 Dec - 08 Dec	Aer Lingus
05 Dec - 12 Dec	Aer Lingus
13 Dec - 03 Jan	Frontier Airlines
13 Dec - 20 Dec	Aer Lingus	direct
25 Dec - 01 Jan	Aer Lingus
13 Dec - 03 Jan	Aer Lingus	direct
27 Dec - 03 Jan	Aer Lingus	direct
29 Dec - 05 Jan	Aer Lingus

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to Dublin in December from $696

Return flights