Cheapest return flights from London to Shannon in September from $59

Best time to book flights for London (LGW) to Shannon (SNN) flights at AirHint

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

Return flights

22 Sep - 30 Sep Ryanair direct
03 Sep - 09 Sep Ryanair direct
13 Sep - 30 Sep Ryanair direct
22 Sep - 09 Oct Ryanair direct
22 Sep - 08 Oct Ryanair direct
22 Sep - 01 Oct Ryanair direct
13 Sep - 01 Oct Ryanair direct
11 Sep - 30 Sep Ryanair direct
11 Sep - 01 Oct Ryanair direct
25 Sep - 30 Sep Ryanair direct
25 Sep - 09 Oct Ryanair direct
25 Sep - 08 Oct Ryanair direct
25 Sep - 01 Oct Ryanair direct
14 Sep - 30 Sep Ryanair direct
14 Sep - 01 Oct Ryanair direct
03 Sep - 12 Sep Ryanair direct
22 Sep - 10 Oct Ryanair direct
03 Sep - 07 Sep Ryanair direct
11 Sep - 12 Sep Ryanair direct
07 Sep - 09 Sep Ryanair direct

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

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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