$545 Cheap Aer Lingus flights Baltimore (BWI) to Shannon (SNN)

View $545 flight on Mon, Sep 29, 2025Opens in a new window

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$545 Cheap Aer Lingus flights Baltimore (BWI) to Shannon (SNN)

Prices were available within the past 7 days and start at $545 for one-way flights and $727 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, Nov 19 - Tue, Nov 25
BWI
Baltimore
SNN
Shannon
$727 Roundtrip, found 4 days ago
$727
Roundtrip
found 4 days ago
Select Aer Lingus flight, departing Wed, Nov 19 from Baltimore to Shannon, returning Tue, Nov 25, priced at $727 found 4 days ago
Flights from Baltimore (BWI) to Shannon (SNN)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Shannon
Airlines serving
Aer Lingus, Air France, American Airlines, British Airways, Delta, KLM, United
Popular airline
British Airways
Distance
3255 mi

Frequently asked questions

How much is an Aer Lingus flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon Airport (SNN)?
You can discover affordable round-trip Aer Lingus flights from $727 from BWI to SNN by filtering your results from "Price (lowest to highest)" on Expedia. Or look for options from $545 for a one-way trip.**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.
What is the cheapest month to fly from BWI to SNN with Aer Lingus?
January is one of the most affordable months to jet away to Shannon with Aer Lingus. You could also find great deals on one-way and return fares in February.
What is the cheapest time to book flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon Airport (SNN) with Aer Lingus?
Search for Aer Lingus flights from BWI to SNN about one month before you want to leave. The cheapest time to reserve an international flight is usually 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of itinerary or ticket type, the best day to book international airfare is usually Sunday. Friday is often the most expensive. Travelers booking on a Sunday can save an average of 17% 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.
Does Aer Lingus fly nonstop from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon Airport (SNN)?
Enter your dates, press search and use the "Nonstop" filter on Expedia to find any direct flights from BWI to SNN with Aer Lingus or other airlines.
What is the earliest Aer Lingus flight from BWI to SNN?
Search Aer Lingus's earliest flights from BWI to SNN by selecting the "Morning" and "Early Morning" filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer 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.
What airports does Aer Lingus fly into in Shannon?
Aer Lingus flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon land at Shannon Airport (SNN). This is the main gateway here.
What kind of luggage can I take on an Aer Lingus flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon Airport (SNN)?
Aer Lingus lets passengers bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 62 inches on standard economy flights from BWI to SNN. You can also bring 1 cabin bag with you in the cabin. This hand luggage must not exceed 21 inches x 15 inches x 9 inches and weigh less than 22 lb. Baggage policies can differ depending on your cabin class and fare type, so check your booking or Aer Lingus's website to avoid any unexpected fees at the airport.
Why fly with Aer Lingus from BWI to SNN?
Jetting off from BWI to SNN with Aer Lingus comes with a host of perks, including a 4-star airline rating and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to spend on select future travel purchases. That's on top of the Aer Lingus AerClub points you can earn with Aer Lingus.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Aer Lingus flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Shannon Airport (SNN)?
Typically, you can change or cancel your flight, although there may be a charge if you booked more than 24 hours ago. Want to keep your options open? Make use of Expedia's "Changes included" or "No cancel fee" filter to find flights that won't charge you extra if you have to revise your plans. To make modifications, go to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.