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 $525

The cheapest prices found with in the last 7 days for return flights were $544 and $525 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Nov 16 - Mon, Nov 30
DUB
Dublin
ORD
O'Hare Intl.
$544 Roundtrip, just found
$544
Roundtrip
just found
Select Aer Lingus flight, departing Mon, Nov 16 from Dublin to O'Hare Intl., returning Mon, Nov 30, priced at $544 just found
Sat, Jan 9 - Fri, Jan 15
DUB
Dublin
ORD
O'Hare Intl.
$545 Roundtrip, found 2 days ago
$545
Roundtrip
found 2 days ago
Select Aer Lingus flight, departing Sat, Jan 9 from Dublin to O'Hare Intl., returning Fri, Jan 15, priced at $545 found 2 days ago
Fri, Oct 30 - Sun, Nov 1
DUB
Dublin
ORD
O'Hare Intl.
$548 Roundtrip, found 5 hours ago
$548
Roundtrip
found 5 hours ago
Select Aer Lingus flight, departing Fri, Oct 30 from Dublin to O'Hare Intl., returning Sun, Nov 1, priced at $548 found 5 hours ago
Fri, Oct 23 - Mon, Nov 2
DUB
Dublin
ORD
O'Hare Intl.
$552 Roundtrip, found 11 hours ago
$552
Roundtrip
found 11 hours ago
Select Aer Lingus flight, departing Fri, Oct 23 from Dublin to O'Hare Intl., returning Mon, Nov 2, priced at $552 found 11 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.