Aer Lingus Flight 123 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Aer Lingus Flight 123 Route Deals From $506

The cheapest prices found with in the last 7 days for return flights were $536 and $506 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 5 - Wed, Nov 11
DUB
Dublin
ORD
O'Hare Intl.
$536 Roundtrip, found 6 days ago
$536
Roundtrip
found 6 days ago
Select Aer Lingus flight, departing Thu, Nov 5 from Dublin to O'Hare Intl., returning Wed, Nov 11, priced at $536 found 6 days ago
Thu, Nov 19 - Wed, Nov 25
DUB
Dublin
ORD
O'Hare Intl.
$537 Roundtrip, found 1 day ago
$537
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Thu, Nov 19 from Dublin to O'Hare Intl., returning Wed, Nov 25, priced at $537 found 1 day ago
Wed, Mar 10 - Sun, Mar 14
DUB
Dublin
ORD
O'Hare Intl.
$582 Roundtrip, found 2 days ago
$582
Roundtrip
found 2 days ago
Select Aer Lingus flight, departing Wed, Mar 10 from Dublin to O'Hare Intl., returning Sun, Mar 14, priced at $582 found 2 days ago

Frequently asked questions

What route does flight number EI123 take?
EI123 travels from Dublin Airport to ORD directly. This journey takes 8 hours and 15 minutes.
How often is EI123 on time?
Around 74% of Aer Lingus flight number EI123 services depart as scheduled — so consider leaving some room in your travel plans. If there's a delay, the standard wait time is roughly 17 minutes. Be aware of this if you need to make a connecting flight or your friends are giving you a lift from the airport. This trip has a 2.25-star rating.
What terminal does EI123 fly out of?
Flight number EI123 runs between Dublin Airport and ORD, and travelers on this flight normally depart from Terminal 2.
What kind of plane is on flight number EI123?
Expect to board an Airbus A330 if you're booked on flight EI123. Almost all services from Dublin Airport to O'Hare Airport operate using this type of aircraft.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your EI123 flight with Travelocity, please visit our Customer Service Portal.