AirHint found the following cheapest return flights from Denver (DEN) to Dublin (DUB) in August 2026 (see full year).

Return flights

15 Aug - 24 Aug	Aer Lingus	direct
19 Aug - 26 Aug	Aer Lingus	direct
17 Aug - 24 Aug	Aer Lingus	direct
21 Aug - 03 Sep	Air Canada
05 Aug - 17 Aug	Aer Lingus	direct
05 Aug - 16 Aug	Aer Lingus	direct
30 Aug - 14 Sep	Aer Lingus	direct
02 Aug - 09 Aug	Aer Lingus	direct
07 Aug - 14 Aug	Aer Lingus	direct
04 Aug - 16 Aug	Air Canada
04 Aug - 15 Aug	Air Canada
27 Aug - 03 Sep	Aer Lingus

Also check the deals for one-way flights from Denver to Dublin in August.

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 Denver to Dublin in August from 549€

Return flights