Aer Lingus Flight AA123 Deals & Information (2025/2026)

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 $599

The cheapest prices found with in the last 7 days for return flights were $472 and $599 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 26 - Sun, Nov 30
DUB
Dublin
ORD
O'Hare Intl.
$472 Roundtrip, found 18 hours ago
$472
Roundtrip
found 18 hours ago
Select Aer Lingus flight, departing Wed, Nov 26 from Dublin to O'Hare Intl., returning Sun, Nov 30, priced at $472 found 18 hours ago
Sat, Nov 8 - Mon, Nov 17
DUB
Dublin
ORD
O'Hare Intl.
$472 Roundtrip, found 1 day ago
$472
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Sat, Nov 8 from Dublin to O'Hare Intl., returning Mon, Nov 17, priced at $472 found 1 day ago
Sun, Nov 30 - Sun, Dec 7
DUB
Dublin
ORD
O'Hare Intl.
$474 Roundtrip, found 1 day ago
$474
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Sun, Nov 30 from Dublin to O'Hare Intl., returning Sun, Dec 7, priced at $474 found 1 day ago
Wed, Oct 8 - Mon, Oct 13
DUB
Dublin
ORD
O'Hare Intl.
$476 Roundtrip, found 4 hours ago
$476
Roundtrip
found 4 hours ago
Select Aer Lingus flight, departing Wed, Oct 8 from Dublin to O'Hare Intl., returning Mon, Oct 13, priced at $476 found 4 hours 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.