Cheapest return flights from Shannon to Boston in May from $661

Best time to book flights for Shannon (SNN) to Boston (BOS) flights at AirHint

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

Return flights

29 May - 03 Jun Ryanair
29 May - 02 Jun Ryanair
30 May - 02 Jun British Airways
28 May - 02 Jun United
28 May - 01 Jun United
27 May - 03 Jun United
29 May - 05 Jun British Airways
31 May - 30 Jun Ryanair
23 May - 30 May United
28 May - 31 May United
24 May - 31 May United
27 May - 10 Jun Ryanair
26 May - 05 Jun United
23 May - 30 May Aer Lingus direct
24 May - 31 May Aer Lingus direct

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

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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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