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

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Aer Lingus Flight 123 Route Deals From $460

The cheapest prices found with in the last 7 days for return flights were $545 and $460 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 23 - Sun, Nov 29
DUB
Dublin
ORD
O'Hare Intl.
$545 Roundtrip, found 5 days ago
$545
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Mon, Nov 23 from Dublin to O'Hare Intl., returning Sun, Nov 29, priced at $545 found 5 days ago
Thu, Nov 5 - Wed, Nov 11
DUB
Dublin
ORD
O'Hare Intl.
$546 Roundtrip, found 4 days ago
$546
Roundtrip
found 4 days ago
Select Aer Lingus flight, departing Thu, Nov 5 from Dublin to O'Hare Intl., returning Wed, Nov 11, priced at $546 found 4 days ago
Sun, Nov 1 - Sun, Nov 8
DUB
Dublin
ORD
O'Hare Intl.
$658 Roundtrip, found 1 hour ago
$658
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Sun, Nov 1 from Dublin to O'Hare Intl., returning Sun, Nov 8, priced at $658 found 1 hour 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.