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

Return flights

20 Apr - 27 Apr	Icelandair
13 Apr - 20 Apr	Icelandair
16 Apr - 23 Apr	Icelandair
17 Apr - 24 Apr	Icelandair
09 Apr - 16 Apr	Icelandair
14 Apr - 21 Apr	Air Canada
15 Apr - 22 Apr	Air Canada
08 Apr - 15 Apr	Air Canada
23 Apr - 30 Apr	Icelandair
13 Apr - 17 Apr	Icelandair

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

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 April from 320€

Return flights