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

Return flights

01 Jul - 08 Jul	United
04 Jul - 13 Jul	United
01 Jul - 11 Jul	United
28 Jul - 04 Aug	United
01 Jul - 20 Jul	United
13 Jul - 20 Jul	United
24 Jul - 14 Aug	United
03 Jul - 18 Jul	United
04 Jul - 18 Jul	United
03 Jul - 18 Jul	Aer Lingus	direct
01 Jul - 20 Jul	Aer Lingus	direct
04 Jul - 18 Jul	Aer Lingus	direct
24 Jul - 14 Aug	Aer Lingus	direct
28 Jul - 04 Aug	Aer Lingus	direct

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

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 July from $723

Return flights