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

Return flights

28 Dec - 07 Jan	WestJet
12 Dec - 17 Dec	WestJet
01 Dec - 27 Dec	KLM
23 Dec - 10 Jan	Delta
18 Dec - 01 Jan	Air France
22 Dec - 31 Dec	Lufthansa
16 Dec - 28 Dec	Lufthansa
24 Dec - 02 Jan	Air Canada
19 Dec - 30 Dec	WestJet
13 Dec - 02 Jan	Air Canada
20 Dec - 10 Jan	Air Canada
17 Dec - 28 Dec	Air Canada
22 Dec - 03 Jan	Air Canada
20 Dec - 03 Jan	Air Canada

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 510€

Return flights