$484 Cheap Aer Lingus flights Philadelphia (PHL) to Dublin (DUB)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap Aer Lingus round-trip flights from $402 from PHL to DUB. Affordable one-way fares from $484 are also on offer.**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 Dublin are usually cheaper in the quieter months of January and February. Whether you need a one-way or round-trip ticket, you could score a better deal then.

To discover affordable flights from PHL to DUB with Aer Lingus, begin your search about one month before your intended departure. You can save 17% when you lock in your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**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 figure out if there’s a direct trip from PHL to DUB with Aer Lingus or other carriers, check the “Nonstop” box when browsing for tickets.

To find the earliest departures from PHL to DUB with Aer Lingus, sort your results by “Early Morning” and “Morning.” Booking an early flight usually means you’ll experience 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.

Aer Lingus flights from Philadelphia Intl. Airport (PHL) to Dublin land at Dublin Airport (DUB). This is the main entry point to this destination.

Aer Lingus allows you to bring 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 62 inches on standard economy flights from PHL to DUB. Additionally, you can take 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 allowances can vary depending on the cabin class and fare type, so check your booking or Aer Lingus’s website to avoid extra costs at the airport.

Offering a 4-star airline rating and a rewarding loyalty program, Aer Lingus is a popular option for many passengers flying from PHL to DUB. Also, if you’re an Aer Lingus AerClub and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your ticket type, a fee is typically charged if you change or cancel your flight more than 24 hours after it’s confirmed. To secure plane tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you search for flights. For additional information on canceling or modifying your reservation, head to “Trips,” select your flight and click on “Manage Booking.”