Cheapest return flights from London to Shannon in December from $68

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

Return flights

06 Dec - 12 Dec Ryanair direct
06 Dec - 20 Dec Ryanair direct
06 Dec - 24 Dec Ryanair direct
06 Dec - 19 Dec Ryanair direct
06 Dec - 13 Dec Ryanair direct
14 Dec - 20 Dec Ryanair direct
14 Dec - 24 Dec Ryanair direct
14 Dec - 19 Dec Ryanair direct
07 Dec - 12 Dec Ryanair direct
07 Dec - 20 Dec Ryanair direct
27 Dec - 15 Jan Ryanair direct
27 Dec - 11 Jan Ryanair direct
27 Dec - 14 Jan Ryanair direct
30 Dec - 15 Jan Ryanair direct
30 Dec - 11 Jan Ryanair direct
30 Dec - 14 Jan Ryanair direct
28 Dec - 15 Jan Ryanair direct
28 Dec - 11 Jan Ryanair direct
28 Dec - 14 Jan Ryanair direct
26 Dec - 15 Jan Ryanair direct

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

Skyscanner

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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