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

Return flights

03 Dec - 07 Dec	Icelandair
01 Dec - 09 Dec	Icelandair
02 Dec - 09 Dec	Icelandair
03 Dec - 10 Dec	Icelandair
01 Dec - 13 Dec	Icelandair
05 Dec - 12 Dec	Icelandair
03 Dec - 07 Dec	Aer Lingus	direct
01 Dec - 09 Dec	Aer Lingus	direct
02 Dec - 09 Dec	Aer Lingus	direct
01 Dec - 08 Dec	Aer Lingus	direct
31 Dec - 09 Jan	TAP
14 Dec - 11 Jan	TAP
30 Dec - 06 Jan	TAP
31 Dec - 06 Jan	TAP
28 Dec - 11 Jan	TAP
19 Dec - 11 Jan	Icelandair
25 Dec - 08 Jan	Icelandair
29 Dec - 05 Jan	Icelandair
18 Dec - 01 Jan	Icelandair
19 Dec - 01 Jan	Icelandair

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 352€

Return flights