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

Return flights

28 Dec - 15 Jan	Aer Lingus	direct
30 Dec - 17 Jan	Icelandair
26 Dec - 09 Jan	Air Transat
23 Dec - 24 Jan	Iberia
25 Dec - 11 Jan	Air Canada	direct
31 Dec - 11 Jan	Lufthansa
27 Dec - 11 Jan	Air Canada	direct
27 Dec - 12 Jan	Lufthansa	direct
30 Dec - 10 Jan	Air Canada	direct
25 Dec - 08 Jan	United
25 Dec - 28 Dec	United
24 Dec - 28 Dec	United
24 Dec - 29 Dec	United
23 Dec - 27 Dec	Air Canada
26 Dec - 30 Dec	British Airways
23 Dec - 28 Dec	United
23 Dec - 31 Dec	British Airways
23 Dec - 29 Dec	WestJet
25 Dec - 29 Dec	Air Canada	direct
25 Dec - 31 Dec	Lufthansa

Also check the deals for one-way flights from Toronto 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 Toronto to Dublin in December from 502€

Return flights