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

Return flights

12 Dec - 17 Dec	Icelandair
01 Dec - 05 Dec	Icelandair
03 Dec - 07 Dec	Icelandair
17 Dec - 15 Jan	Icelandair
16 Dec - 11 Jan	Icelandair
17 Dec - 12 Jan	Icelandair
08 Dec - 17 Dec	Icelandair
15 Dec - 28 Dec	Icelandair
03 Dec - 07 Dec	Aer Lingus	direct
17 Dec - 13 Jan	Icelandair
17 Dec - 26 Dec	Icelandair
17 Dec - 28 Dec	Icelandair
12 Dec - 31 Dec	Icelandair
21 Dec - 04 Jan	TAP
20 Dec - 28 Dec	TAP
18 Dec - 15 Jan	Icelandair
13 Dec - 02 Jan	Icelandair
14 Dec - 01 Jan	Icelandair
27 Dec - 03 Jan	Icelandair
27 Dec - 04 Jan	Icelandair

Also check the deals for one-way flights from Dublin to Toronto 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 Dublin to Toronto in December from 321€

Return flights