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

Return flights

04 Mar - 08 Mar	Aer Lingus	direct
05 Mar - 09 Mar	Aer Lingus	direct
12 Mar - 20 Mar	Aer Lingus	direct
12 Mar - 19 Mar	Aer Lingus	direct
15 Mar - 22 Mar	Aer Lingus	direct
11 Mar - 19 Mar	Aer Lingus	direct
13 Mar - 18 Mar	Aer Lingus	direct
13 Mar - 17 Mar	Aer Lingus	direct
13 Mar - 20 Mar	British Airways
14 Mar - 19 Mar	British Airways
31 Mar - 04 Apr	British Airways
31 Mar - 04 Apr	Aer Lingus	direct

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

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 March from 400€

Return flights