Cheapest return flights from Denver to Dublin in May from $536

Best time to book flights for Denver (DEN) to Dublin (DUB) flights at AirHint

AirHint found the following cheapest return flights from Denver (DEN) to Dublin (DUB) in May 2025 (see full year).

Return flights

01 May - 06 May Frontier Airlines
04 May - 07 May Frontier Airlines
14 May - 29 May Aer Lingus direct
07 May - 14 May Aer Lingus direct
06 May - 22 May Air Canada
20 May - 05 Jun Air Canada
14 May - 05 Jun United
13 May - 20 May United
14 May - 05 Jun Aer Lingus direct
19 May - 26 May Air Canada
02 May - 16 May Aer Lingus direct
05 May - 11 May United
10 May - 15 May Aer Lingus direct
12 May - 07 Jun Air Canada
25 May - 08 Jun Air France
27 May - 03 Jun United
23 May - 01 Jun WestJet
23 May - 14 Jun WestJet
31 May - 30 Jun jetBlue

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

Skyscanner

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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