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

Return flights

26 May - 16 Jun	Air Transat
09 May - 18 May	Air Transat
22 May - 03 Jun	Air Transat
04 May - 26 May	WestJet
19 May - 29 May	WestJet
18 May - 27 May	WestJet
19 May - 26 May	WestJet
05 May - 19 May	WestJet
02 May - 09 May	WestJet
02 May - 08 May	WestJet
09 May - 12 May	WestJet
25 May - 30 Jun	WestJet	direct
07 May - 13 May	Air Canada
23 May - 07 Jun	WestJet
30 May - 09 Jun	Air Canada
23 May - 07 Jun	WestJet	direct

Also check the deals for one-way flights from Calgary 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.

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Cheapest return flights from Calgary to Dublin in May from 435€

Return flights