Cheapest return flights from Shannon to Boston in May from $465

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

14 May - 18 May Ryanair
15 May - 18 May Ryanair
14 May - 19 May Ryanair
05 May - 19 May Aer Lingus direct
15 May - 19 May Ryanair
05 May - 17 May Aer Lingus direct
01 May - 05 May Ryanair
29 May - 02 Jun Aer Lingus
30 May - 06 Jun Ryanair
09 May - 17 May Aer Lingus
10 May - 17 May Aer Lingus
04 May - 11 May United
24 May - 04 Jun United
15 May - 10 Jun Ryanair
27 May - 09 Jun Ryanair
31 May - 08 Jun Ryanair
31 May - 14 Jun Ryanair
26 May - 09 Jun Delta
26 May - 09 Jun 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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