Cheapest return flights from Shannon to Boston in August from $726

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

Return flights

19 Aug - 07 Sep United
18 Aug - 25 Aug British Airways
02 Aug - 10 Aug United
03 Aug - 10 Aug United
21 Aug - 28 Aug United
18 Aug - 25 Aug Aer Lingus direct
03 Aug - 10 Aug Aer Lingus direct
19 Aug - 07 Sep Aer Lingus direct
05 Aug - 12 Aug Aer Lingus direct
21 Aug - 28 Aug Aer Lingus direct
01 Aug - 10 Aug Aer Lingus direct
02 Aug - 10 Aug Aer Lingus direct

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

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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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