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

Return flights

05 Aug - 12 Aug	Iberia
04 Aug - 11 Aug	British Airways
03 Aug - 10 Aug	British Airways
02 Aug - 09 Aug	British Airways
01 Aug - 08 Aug	Air Canada
05 Aug - 12 Aug	Aer Lingus	direct
02 Aug - 09 Aug	Aer Lingus	direct
03 Aug - 10 Aug	Aer Lingus	direct
28 Aug - 07 Sep	Delta
01 Aug - 08 Aug	Aer Lingus	direct
28 Aug - 07 Sep	Aer Lingus	direct
13 Aug - 18 Aug	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 368€

Return flights