Cheapest one-way flights from London to Shannon in December from $97

AirHint found the following cheapest one-way flights from London (LHR) to Shannon (SNN) in December 2025 (see full year).

One-Way flights

08 Dec Aer Lingus direct
07 Dec Aer Lingus direct
26 Dec Aer Lingus direct
27 Dec Aer Lingus direct
18 Dec British Airways
19 Dec British Airways
20 Dec British Airways
24 Dec Aer Lingus direct
23 Dec Aer Lingus direct
22 Dec British Airways

Also check the deals for return 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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