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

Return flights

08 Dec - 17 Dec	Ryanair	direct
03 Dec - 17 Dec	Ryanair	direct
03 Dec - 07 Dec	Ryanair	direct
01 Dec - 17 Dec	Ryanair	direct
01 Dec - 07 Dec	Ryanair	direct
01 Dec - 02 Dec	Ryanair	direct
05 Dec - 07 Dec	Ryanair	direct
05 Dec - 17 Dec	Ryanair	direct
12 Dec - 17 Dec	Ryanair	direct
08 Dec - 13 Dec	Ryanair	direct
28 Dec - 06 Jan	KLM
30 Dec - 02 Jan	KLM
28 Dec - 02 Jan	KLM
21 Dec - 15 Jan	KLM
20 Dec - 02 Jan	KLM
23 Dec - 06 Jan	Lufthansa
30 Dec - 18 Jan	Ryanair	direct
28 Dec - 18 Jan	Ryanair	direct
29 Dec - 18 Jan	Ryanair	direct
30 Dec - 14 Jan	Ryanair	direct

Also check the deals for one-way flights from Dublin to Barcelona 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 Barcelona in December from $126

Return flights