AirHint found the following cheapest return flights from Madrid (MAD) to Shannon (SNN) in December 2025 (see full year).

Return flights

02 Dec - 16 Dec	Ryanair	direct
09 Dec - 16 Dec	Ryanair	direct
13 Dec - 16 Dec	Ryanair
06 Dec - 16 Dec	Ryanair	direct
13 Dec - 16 Dec	Ryanair	direct
02 Dec - 06 Dec	Ryanair	direct
12 Dec - 15 Dec	Ryanair
30 Dec - 20 Jan	Ryanair	direct
02 Dec - 23 Dec	Ryanair	direct
09 Dec - 23 Dec	Ryanair	direct
06 Dec - 23 Dec	Ryanair	direct
30 Dec - 17 Jan	Ryanair	direct
30 Dec - 10 Jan	Ryanair	direct
20 Dec - 10 Jan	Ryanair	direct

Also check the deals for one-way flights from Madrid to Shannon 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 Madrid to Shannon in December from 108€

Return flights