$513 Cheap British Airways flights Boston (BOS) to Shannon (SNN)

Scoring cheap one-way British Airways flights from BOS to SNN from $513 on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $696 for your next exciting getaway.**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.

January is one of the least expensive months to fly to Shannon with British Airways. You could also find great prices on one-way and return fares in February.

Check for British Airways flights from BOS to SNN about one month before you want to go. The most affordable time to book an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. No matter your itinerary or fare class, the best day to book international airfare is usually Sunday. Friday can be the most expensive. Travelers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct journey from BOS to SNN with British Airways or any other carriers, check the “Nonstop” box when browsing for flights.

Sort your results by “Morning” and “Early Morning” to see the earliest flights from BOS to SNN. Heading off early means you’re 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

British Airways flights from Logan Intl. Airport (BOS) to Shannon land at Shannon Airport (SNN). This is the main entry point here.

For checked luggage, passengers can take 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 29 inches x 15 inches x 16 inches. You can also travel with 2 cabin bags on board when flying standard economy from BOS to SNN with British Airways. This carry-on has to weigh less than 50 lb and be no bigger than 19 inches x 9 inches x 17 inches. Going above these limits can mean extra fees, so read British Airways’s baggage allowance guidelines before you begin packing.

Taking off from BOS to SNN with British Airways means enjoying a host of perks, including a 4-star airline rating and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the British Airways Executive Club points you can earn with British Airways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

British Airways generally operates Airbus A321neo planes for flights from Logan Intl. Airport (BOS) to Shannon Airport (SNN). Keep in mind that aircraft type can differ depending on operational demands, so the plane you catch might be different on your day of travel.

Depending on the type of fare you purchased, a fee may apply if you modify or cancel your booking more than 24 hours after it has been confirmed. To secure plane tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when searching for flights. For more details on changing or canceling your reservation, head to “Trips,” select your flight and tick “Manage Booking.”