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

Return flights

05 May - 12 May	Air Canada
06 May - 13 May	Air Canada
04 May - 11 May	Air Canada
12 May - 19 May	Air Canada
11 May - 18 May	Air Canada
13 May - 20 May	American Airlines
08 May - 15 May	Air Canada
07 May - 14 May	Air Canada
09 May - 16 May	Icelandair
02 May - 15 May	KLM
24 May - 03 Jun	British Airways
01 May - 01 Jun	British Airways
23 May - 02 Jun	British Airways
27 May - 06 Jun	SWISS
27 May - 06 Jun	Aer Lingus	direct
01 May - 01 Jun	Aer Lingus	direct
30 May - 20 Jun	Aer Lingus	direct

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

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 May from 376€

Return flights