AirHint found the following cheapest return flights from Toronto (YYZ) to Dublin (DUB) in December 2026 (see full year).

Return flights

10 Dec - 24 Dec	Icelandair
11 Dec - 26 Dec	Air Canada	direct
11 Dec - 28 Dec	Air Canada	direct
11 Dec - 27 Dec	Air Canada	direct
26 Dec - 08 Jan	Lufthansa
26 Dec - 07 Jan	Lufthansa
17 Dec - 01 Jan	Air Transat
18 Dec - 01 Jan	British Airways
17 Dec - 02 Jan	TAP
18 Dec - 02 Jan	TAP
18 Dec - 03 Jan	TAP
17 Dec - 01 Jan	Air Canada	direct
17 Dec - 02 Jan	Lufthansa	direct
18 Dec - 01 Jan	Lufthansa	direct

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 478€

Return flights