Cheapest return flights from Shannon to Boston in May from $492

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

Return flights

28 May - 07 Jun KLM
28 May - 01 Jun KLM
28 May - 08 Jun KLM
28 May - 13 Jun Delta
01 May - 08 May British Airways
22 May - 31 May United
01 May - 08 May Aer Lingus direct
28 May - 07 Jun Aer Lingus direct
28 May - 01 Jun Aer Lingus direct
28 May - 08 Jun Aer Lingus direct
22 May - 31 May Aer Lingus direct
07 May - 20 May Ryanair
08 May - 20 May Ryanair
31 May - 08 Jun Ryanair
11 May - 20 May United
30 May - 06 Jun Aer Lingus
25 May - 25 May United
25 May - 25 May Aer Lingus direct

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

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