Cheapest return flights from Boston to Shannon in October from $380

AirHint found the following cheapest return flights from Boston (BOS) to Shannon (SNN) in October 2025 (see full year).

Return flights

12 Oct - 17 Oct Aer Lingus direct
03 Oct - 10 Oct Aer Lingus direct
03 Oct - 09 Oct Aer Lingus direct
10 Oct - 17 Oct Aer Lingus direct
06 Oct - 15 Oct United
06 Oct - 15 Oct Aer Lingus direct
08 Oct - 01 Nov Aer Lingus direct
07 Oct - 14 Oct Aer Lingus
01 Oct - 15 Oct Aer Lingus direct
07 Oct - 14 Oct Aer Lingus direct

Also check the deals for one-way flights from Boston to Shannon in October.

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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