Cheapest return flights from London to Shannon in August from $127

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

Return flights

26 Aug - 27 Aug Aer Lingus direct
13 Aug - 26 Aug Aer Lingus direct
13 Aug - 19 Aug Aer Lingus direct
13 Aug - 22 Aug Aer Lingus direct
26 Aug - 29 Aug Aer Lingus direct
26 Aug - 28 Aug Aer Lingus direct
13 Aug - 14 Aug Aer Lingus direct
13 Aug - 13 Aug Aer Lingus direct
26 Aug - 12 Sep Aer Lingus direct
26 Aug - 02 Sep Aer Lingus direct
13 Aug - 15 Aug Aer Lingus direct
12 Aug - 12 Aug Aer Lingus direct
28 Aug - 03 Sep Aer Lingus direct
30 Aug - 01 Sep Aer Lingus direct
31 Aug - 03 Sep Aer Lingus direct
25 Aug - 11 Sep Aer Lingus direct
31 Aug - 01 Sep Aer Lingus direct
28 Aug - 06 Sep Aer Lingus direct
14 Aug - 03 Sep Aer Lingus direct
02 Aug - 04 Sep KM Malta Airlines

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

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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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