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Cheapest one-way flights from London (LHR) to Shannon (SNN), December

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Dates, airline, and price
Dates	Airline	Price
02 Dec	Aer Lingus Direct Flight
12 Dec	Aer Lingus Direct Flight
10 Dec	Aer Lingus Direct Flight
04 Dec	Aer Lingus Direct Flight
06 Dec	Aer Lingus Direct Flight
13 Dec	Aer Lingus Direct Flight
28 Dec	Aer Lingus Direct Flight
27 Dec	Aer Lingus Direct Flight
16 Dec	Aer Lingus Direct Flight
15 Dec	Aer Lingus Direct Flight

deals for return flights from London to Shannon in December.

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Cheap car rent in Shannon

Updated Aug 28, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from London (LHR) to Shannon (SNN), December

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