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

Return flights

09 May - 20 May	Air Transat
10 May - 20 May	Air Transat
09 May - 18 May	Air Transat
09 May - 17 May	Air Transat
24 May - 02 Jun	Air Transat
23 May - 07 Jun	Air Transat
19 May - 26 May	Iberia
07 May - 15 May	Iberia
02 May - 30 Jun	Air Transat
08 May - 17 May	WestJet
18 May - 25 May	Finnair
25 May - 12 Jun	WestJet
14 May - 25 May	WestJet
30 May - 09 Jun	Delta
26 May - 13 Jun	Delta

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 404€

Return flights