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

Return flights

07 Jun - 15 Jun	Icelandair
04 Jun - 16 Jun	Icelandair
02 Jun - 14 Jun	Icelandair
07 Jun - 20 Jun	Brussels Airlines
10 Jun - 20 Jun	Air Canada
03 Jun - 10 Jun	Aer Lingus	direct
17 Jun - 24 Jun	Icelandair
07 Jun - 20 Jun	Aer Lingus	direct
10 Jun - 20 Jun	Aer Lingus	direct
08 Jun - 15 Jun	Aer Lingus	direct
06 Jun - 18 Jul	WestJet
17 Jun - 02 Jul	United
28 Jun - 05 Jul	Icelandair
26 Jun - 13 Jul	Icelandair
28 Jun - 05 Jul	Aer Lingus	direct
26 Jun - 13 Jul	Aer Lingus	direct

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

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 June from 775€

Return flights