Cheapest one-way flights from London to Shannon in December from $62

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

One-Way flights

05 Dec Aer Lingus direct
04 Dec Aer Lingus direct
01 Dec Aer Lingus direct
09 Dec Aer Lingus direct
02 Dec Aer Lingus direct
03 Dec Aer Lingus direct
10 Dec Aer Lingus direct
31 Dec Aer Lingus direct
29 Dec Aer Lingus direct
26 Dec Aer Lingus direct

Also check the deals for return flights from London to Shannon 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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