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

Return flights

14 Dec - 29 Dec	Aer Lingus
07 Dec - 09 Dec	Aer Lingus
18 Dec - 21 Dec	Aer Lingus	direct
01 Dec - 03 Dec	Ryanair
11 Dec - 15 Dec	Ryanair
11 Dec - 18 Dec	Ryanair
26 Dec - 29 Dec	Ryanair
30 Dec - 02 Jan	Ryanair
05 Dec - 08 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
19 Dec - 21 Dec	Ryanair
28 Dec - 04 Jan	Aer Lingus
28 Dec - 01 Jan	Aer Lingus	direct
28 Dec - 04 Jan	Aer Lingus	direct

Also check the deals for one-way flights from Shannon to Paris 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 Shannon to Paris in December from 135€

Return flights