$557 Cheap Aer Lingus flights Chicago (ORD) to Dublin (DUB)

Landing cheap one-way Aer Lingus flights from ORD to DUB from $557 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $548 for your next exciting adventure.**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 generally cheaper in the off-peak months of January and February. Whether you’re after a round-trip or one-way ticket, you could score a better deal then.

Search for Aer Lingus flights from ORD to DUB about one month before you want to go. The cheapest time to book an international flight is generally 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 fare class, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Passengers 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.

Aer Lingus offers direct flights from O’Hare Intl. Airport (ORD) to Dublin Airport (DUB), with 6 departures every week. Just apply the “Nonstop” and “Airline” filters while searching on Expedia to see all direct Aer Lingus flights to DUB.

From takeoff till landing, a nonstop Aer Lingus flight from O’Hare Intl. Airport (ORD) to Dublin Airport (DUB) takes around 7h 19m.

The earliest flight from ORD to DUB with Aer Lingus departs at 9:00PM UTC-6. You’ll touch down at 10:20AM UTC+0. The last Aer Lingus flight of the day leaves at 9:00PM UTC-6 and arrives at 10:20AM UTC+0. With approximately 20% fewer cancellations for departures before noon, beginning your travel day early is generally the best choice.**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.

Jump on an Aer Lingus flight from O’Hare Intl. Airport (ORD) to Dublin, and you’ll probably touch down at Dublin Airport (DUB). This is the airline’s primary hub in this destination.

Aer Lingus allows passengers to bring 1 checked-in bag weighing up to 50 lb with dimensions not exceeding 62 inches on standard economy flights from ORD to DUB. You can also bring 1 cabin bag in the cabin. This carry-on luggage must not exceed 21 inches x 15 inches x 9 inches and weigh less than 22 lb. Baggage allowances can differ based on the cabin class and fare type, so check your booking or Aer Lingus’s website to avoid paying additional fees at the airport.

Offering a rewarding loyalty program and a 4-star airline rating, Aer Lingus is a favorite for many travelers flying from ORD to DUB. What’s more, if you’re an Aer Lingus AerClub and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Chances are you’ll board an Airbus A330-300 for your Aer Lingus flight from O’Hare Intl. Airport (ORD) to Dublin Airport (DUB). However, you could end up on an alternative aircraft if there’s an operational need.

Depending on the type of fare you purchased, a fee is typically charged 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 you search for flights. For more details on changing or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”