$515 Cheap Aer Lingus flights Boston (BOS) to Southampton (SOU)

You’ll discover budget-friendly return Aer Lingus flights from $646 from BOS to SOU by filtering your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $515 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.

Aer Lingus flights to Southampton are generally more affordable in the off-peak months of January and February. Whether you’re after a one-way or round-trip ticket, you could score a better deal then.

Start your search for Aer Lingus flights from BOS to SOU about one month before you want to leave. The most affordable time to book 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. No matter your itinerary and fare class, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Travelers who book 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.

Fill in your dates, press search and select the “Nonstop” filter on Expedia to find any direct flights from BOS to SOU with Aer Lingus or another airline.

Sort your results by “Early Morning” and “Morning” to find the earliest flights from BOS to SOU. Jetting off early means you’re 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.

Aer Lingus flights from Logan Intl. Airport (BOS) to Southampton touch down at Southampton Airport (SOU). This is the main entry point to this destination.

Aer Lingus lets travelers bring 1 checked-in bag weighing up to 50 lb with maximum dimensions of 62 inches on standard economy flights from BOS to SOU. You can also bring 1 cabin bag with you in the cabin. This carry-on luggage must not exceed 21 inches x 15 inches x 9 inches and weigh no more than 22 lb. Baggage allowances can differ depending on your cabin class and fare type, so check your booking or Aer Lingus’s website to avoid any additional costs at the airport.

Flying from BOS to SOU with Aer Lingus means enjoying a range of perks, such as a rewarding loyalty program and a 4-star airline rating. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That’s in addition to 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.

In most cases, you can modify or cancel your flight, although additional charges may apply if you made your booking more than 24 hours ago. Need to keep your options open? Apply the “No cancel fee” or “Changes included” filter to find flights that won’t charge extra if you need to adjust your plans. To update your booking, head to “Trips,” select your flight and click on “Manage Booking” for more information.