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

Return flights

13 Dec - 14 Dec	Ryanair	direct
14 Dec - 21 Dec	Ryanair
14 Dec - 17 Dec	Ryanair
12 Dec - 14 Dec	Ryanair
06 Dec - 13 Dec	Wizz Air UK
14 Dec - 21 Dec	Ryanair	direct
21 Dec - 11 Jan	Ryanair	direct
13 Dec - 21 Dec	Ryanair	direct
14 Dec - 04 Jan	Ryanair	direct
21 Dec - 04 Jan	Ryanair	direct
07 Dec - 14 Dec	easyJet
28 Dec - 03 Jan	Ryanair
28 Dec - 11 Jan	Ryanair	direct
24 Dec - 01 Jan	Ryanair
27 Dec - 03 Jan	Jet2
28 Dec - 04 Jan	Ryanair	direct
26 Dec - 02 Jan	Ryanair
27 Dec - 02 Jan	Jet2
20 Dec - 21 Dec	Ryanair	direct
14 Dec - 20 Dec	Ryanair	direct

Also check the deals for one-way flights from Grenoble 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 Grenoble to Dublin in December from 66€

Return flights