AirHint found the following cheapest return flights from Boston (BOS) to Shannon (SNN) in July 2026 (see full year).
Return flights
| 15 Jul - 08 Aug | Air France | ||
| 23 Jul - 26 Jul | American Airlines | ||
| 15 Jul - 08 Aug | Aer Lingus | direct | |
| 23 Jul - 26 Jul | Aer Lingus | direct |
Also check the deals for one-way flights from Boston to Shannon in July.
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