United Cheap Flights from Boston to Shannon

Use the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines round-trip flights €588 from BOS to SNN. Affordable one-way options from €281 are also available.*

*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

United Airlines flights to Shannon are generally cheaper in the low-season months of January and February. Whether you need a return or one-way ticket, you could score a better deal then.

To find out if there's a direct journey from BOS to SNN with United Airlines or other carriers, check the "Nonstop" box when searching for tickets.

United Airlines flights from Logan Intl. Airport (BOS) to Shannon touch down at Shannon Airport (SNN). This is the main entry point to this city.

Changes are usually free within 24 hours of making a booking, but your airline may add a charge after that. For further details about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to update your itinerary without being charged, apply the "Changes included" and "No cancel fee" filters when organising your next trip.