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

Return flights

01 Jun - 11 Jun	KLM
01 Jun - 08 Jun	Delta
01 Jun - 07 Jun	Delta
01 Jun - 08 Jun	Aer Lingus	direct
01 Jun - 07 Jun	Aer Lingus	direct
01 Jun - 11 Jun	Aer Lingus	direct
18 Jun - 25 Jun	Aer Lingus	direct
15 Jun - 22 Jun	Aer Lingus	direct
09 Jun - 21 Jun	Aer Lingus	direct
09 Jun - 19 Jun	Aer Lingus	direct
26 Jun - 17 Jul	United
26 Jun - 17 Jul	Aer Lingus	direct

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

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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Cheapest return flights from Shannon to Boston in June from 452€

Return flights