Cheapest return flights from Boston to Shannon in April from $345

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

Return flights

27 Apr - 01 May Aer Lingus direct
14 Apr - 23 Apr Aer Lingus direct
28 Apr - 06 May Aer Lingus direct
01 Apr - 21 Apr Aer Lingus direct
01 Apr - 22 Apr Aer Lingus direct
01 Apr - 20 Apr Aer Lingus direct
24 Apr - 03 May Aer Lingus direct
16 Apr - 03 May United
20 Apr - 24 Apr United
17 Apr - 25 Apr Air Canada
16 Apr - 03 May Aer Lingus direct
20 Apr - 24 Apr Aer Lingus direct

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

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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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