AirHint found the following cheapest return flights from Calgary (YYC) to Dublin (DUB) in December 2025 (see full year).

Return flights

01 Dec - 11 Dec	WestJet
02 Dec - 23 Dec	WestJet
03 Dec - 24 Dec	WestJet
09 Dec - 29 Dec	Air Canada
12 Dec - 17 Dec	WestJet
10 Dec - 28 Dec	Finnair
11 Dec - 01 Jan	Finnair
02 Dec - 27 Dec	Air France
06 Dec - 03 Jan	Delta
25 Dec - 01 Jan	Delta
22 Dec - 29 Dec	Air Canada
26 Dec - 03 Jan	KLM
20 Dec - 27 Dec	KLM
19 Dec - 03 Jan	KLM
19 Dec - 04 Jan	KLM

Also check the deals for one-way flights from Calgary to Dublin in December.

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 December from $490

Return flights