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

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Aer Lingus Flight 123 Route Deals From $326

The cheapest prices found with in the last 7 days for return flights were $143 and $326 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 1 - Wed, May 5
DUB
Dublin
ORD
O'Hare Intl.
$143 Roundtrip, found 9 hours ago
$143
Roundtrip
found 9 hours ago
Select Aer Lingus flight, departing Sat, May 1 from Dublin to O'Hare Intl., returning Wed, May 5, priced at $143 found 9 hours ago
Wed, Oct 14 - Mon, Oct 19
DUB
Dublin
ORD
O'Hare Intl.
$143 Roundtrip, found 17 hours ago
$143
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Wed, Oct 14 from Dublin to O'Hare Intl., returning Mon, Oct 19, priced at $143 found 17 hours ago
Thu, Oct 1 - Thu, Oct 8
DUB
Dublin
ORD
O'Hare Intl.
$297 Roundtrip, found 11 hours ago
$297
Roundtrip
found 11 hours ago
Select Aer Lingus flight, departing Thu, Oct 1 from Dublin to O'Hare Intl., returning Thu, Oct 8, priced at $297 found 11 hours ago
Sat, Sep 5 - Wed, Sep 9
DUB
Dublin
ORD
O'Hare Intl.
$318 Roundtrip, found 13 hours ago
$318
Roundtrip
found 13 hours ago
Select Aer Lingus flight, departing Sat, Sep 5 from Dublin to O'Hare Intl., returning Wed, Sep 9, priced at $318 found 13 hours ago
Wed, Nov 4 - Wed, Nov 18
DUB
Dublin
ORD
O'Hare Intl.
$358 Roundtrip, found 7 hours ago
$358
Roundtrip
found 7 hours ago
Select Aer Lingus flight, departing Wed, Nov 4 from Dublin to O'Hare Intl., returning Wed, Nov 18, priced at $358 found 7 hours ago
Fri, Oct 2 - Fri, Oct 9
DUB
Dublin
ORD
O'Hare Intl.
$443 Roundtrip, found 10 hours ago
$443
Roundtrip
found 10 hours ago
Select Aer Lingus flight, departing Fri, Oct 2 from Dublin to O'Hare Intl., returning Fri, Oct 9, priced at $443 found 10 hours ago
Sat, Dec 26 - Sun, Dec 27
DUB
Dublin
ORD
O'Hare Intl.
$457 Roundtrip, found 17 hours ago
$457
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Sat, Dec 26 from Dublin to O'Hare Intl., returning Sun, Dec 27, priced at $457 found 17 hours ago
Sat, May 1 - Wed, May 5
DUB
Dublin
ORD
O'Hare Intl.
$513 Roundtrip, found 9 hours ago
$513
Roundtrip
found 9 hours ago
Select Aer Lingus flight, departing Sat, May 1 from Dublin to O'Hare Intl., returning Wed, May 5, priced at $513 found 9 hours ago
Tue, Oct 13 - Fri, Oct 16
DUB
Dublin
ORD
O'Hare Intl.
$520 Roundtrip, found 17 hours ago
$520
Roundtrip
found 17 hours ago
Select Aer Lingus flight, departing Tue, Oct 13 from Dublin to O'Hare Intl., returning Fri, Oct 16, priced at $520 found 17 hours ago
Fri, Aug 28 - Sat, Sep 5
DUB
Dublin
ORD
O'Hare Intl.
$564 Roundtrip, found 2 hours ago
$564
Roundtrip
found 2 hours ago
Select Aer Lingus flight, departing Fri, Aug 28 from Dublin to O'Hare Intl., returning Sat, Sep 5, priced at $564 found 2 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.