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

Return flights

05 Dec - 08 Dec	Wizz Air Malta
04 Dec - 08 Dec	easyJet
28 Dec - 07 Jan	easyJet
14 Dec - 16 Dec	easyJet
28 Dec - 04 Jan	easyJet
28 Dec - 05 Jan	easyJet
29 Dec - 06 Jan	easyJet
29 Dec - 07 Jan	easyJet
27 Dec - 07 Jan	easyJet
29 Dec - 04 Jan	easyJet
29 Dec - 05 Jan	easyJet
27 Dec - 03 Jan	easyJet
28 Dec - 07 Jan	Icelandair	direct
05 Dec - 08 Dec	Icelandair	direct
04 Dec - 08 Dec	Icelandair	direct

Also check the deals for one-way flights from Reykjavik 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 Reykjavik to Dublin in December from $187

Return flights