AirHint found the following cheapest return flights from Boston (BOS) to Shannon (SNN) in April 2026 (see full year).
Return flights
| 16 Apr - 22 Apr | United | ||
| 22 Apr - 29 Apr | Aer Lingus | direct | |
| 16 Apr - 22 Apr | Aer Lingus | direct | |
| 17 Apr - 24 Apr | United |
Also check the deals for one-way flights from Boston to Shannon in April.
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