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

Return flights

02 Sep - 09 Sep	United
19 Sep - 23 Sep	Air Canada
04 Sep - 11 Sep	United
08 Sep - 15 Sep	United
25 Sep - 03 Oct	Hawaiian Airlines
13 Sep - 20 Sep	United
06 Sep - 13 Sep	United
16 Sep - 23 Sep	United
19 Sep - 26 Sep	United
28 Sep - 05 Oct	United
22 Sep - 29 Sep	United
25 Sep - 02 Oct	Alaska Airlines

Also check the deals for one-way flights from Las Vegas to Dublin in September.

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 September from $584

Return flights