Cheapest return flights from Shannon to Sydney in December from $1487

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

Return flights

15 Dec - 31 Dec Ryanair
18 Dec - 08 Jan Aer Lingus

Also check the deals for one-way flights from Shannon to Sydney in December.

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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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