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

Return flights

22 Jul - 05 Aug	Aer Lingus	direct
31 Jul - 08 Aug	Aer Lingus	direct
29 Jul - 06 Aug	Air Canada
18 Jul - 01 Aug	Aer Lingus	direct
20 Jul - 29 Jul	Aer Lingus	direct
13 Jul - 20 Jul	Aer Lingus	direct
13 Jul - 23 Jul	Delta
07 Jul - 21 Jul	Delta
15 Jul - 23 Jul	Aer Lingus
28 Jul - 04 Aug	Aer Lingus
08 Jul - 15 Jul	Aer Lingus	direct
03 Jul - 10 Jul	jetBlue

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

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.

Book a cheap hotel in Dublin

Cheap car rent in Dublin

Cheapest return flights from Denver to Dublin in July from 613€

Return flights