Cheapest return BOS–SNN flights, June

AirHint found the following cheapest return flights from Boston (BOS) to Shannon (SNN) in June 2026 (see full year).

Return flights

09 Jun - 15 Jun Aer Lingus direct
01 Jun - 05 Jun Aer Lingus direct
19 Jun - 27 Jun KLM
17 Jun - 22 Jun Air France
15 Jun - 22 Jun Delta
20 Jun - 06 Jul Delta
20 Jun - 02 Jul Delta
12 Jun - 18 Jun KLM
24 Jun - 28 Jun Air France
18 Jun - 26 Jun KLM
18 Jun - 27 Jun KLM
18 Jun - 25 Jun KLM
25 Jun - 06 Jul Delta
25 Jun - 06 Jul Aer Lingus direct
18 Jun - 05 Jul Porter Airlines (Canada) Ltd

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

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