Aer Lingus

Q: What are Aer Lingus' airline codes?

Aer Lingus' IATA code is EI , its ICAO code is EIN , and its callsign is SHAMROCK .

EI EIN

Aer Lingus is the flag carrier of Ireland, part of International Airlines Group (IAG) and based at Dublin Airport. This guide covers its hub, network, fleet, cabins, baggage, check-in, AerClub and airport transportation.

62
Aircraft: 97
Destinations: DUB
Hub

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The airline

About Aer Lingus

Schedules, aircraft assignments, terminals and fare rules can change. Confirm operational details directly with Aer Lingus before travel.

Official name: Aer Lingus Limited
Callsign: SHAMROCK
Country: Ireland
Founded: 15 April 1936 (first flight in May 1936)
Parent company: International Airlines Group (IAG), since 2015
Head office: Dublin Airport, County Dublin, Ireland
Alliance: None (left oneworld in 2007)
Frequent-flyer program: AerClub (uses Avios)
Official website: aerlingus.com

Aer Lingus is the flag carrier of Ireland, founded in April 1936 and headquartered on the grounds of Dublin Airport in County Dublin. It has been part of International Airlines Group (IAG), alongside British Airways, Iberia and Vueling, since 2015. Aer Lingus is not a member of an airline alliance; it left oneworld in 2007 and works with partners through codeshare and interline agreements.

Its hub is Dublin Airport (DUB), where Aer Lingus operates from Terminal 2 and passengers flying to the United States clear US immigration and customs before departure. It also flies from Cork, Shannon and Knock, with more than 100 routes to the UK, continental Europe and North America, including 24 routes from Ireland to North America in 2026. Regional flights under the Aer Lingus Regional brand are operated by Emerald Airlines.

The fleet of about 62 aircraft is all Airbus: A320-family jets for Europe, and A330s, A321LRs and A321XLRs for transatlantic flights.

Network

Where Aer Lingus flies

Routes and frequencies change with the season. Some flights sold with an EI flight number are operated by Aer Lingus Regional (Emerald Airlines) or by partner airlines; check the "operated by" line when you book.

North America

Flights from Dublin to Boston, New York JFK, Newark, Chicago O'Hare, Philadelphia, Washington Dulles, Toronto, Orlando, Los Angeles, San Francisco, Nashville, Indianapolis, Pittsburgh and Raleigh-Durham, and from Shannon to Boston and New York JFK.

Mexico

A seasonal winter route between Dublin and Cancún, launched in January 2026.

United Kingdom

Flights to London Heathrow, Manchester, Birmingham, Edinburgh, Glasgow, Bristol and other UK airports, many of them operated as Aer Lingus Regional.

Continental Europe

City routes such as Amsterdam, Paris, Rome, Madrid, Barcelona and Lisbon, and leisure routes to Faro, Málaga, the Canary Islands and, in summer, the Mediterranean.

Aircraft

Aer Lingus fleet

The figure of about 62 aircraft is the Aer Lingus mainline fleet: 49 Airbus A320-family aircraft and 13 Airbus A330s. Aer Lingus Regional flights use ATR 72-600 turboprops operated by Emerald Airlines. The aircraft shown at booking is not guaranteed until departure.

Airbus A330

The A330-200 and A330-300 fly transatlantic routes and some longer leisure routes.

Airbus A321LR and A321XLR

Long-range narrowbodies with Business and Economy cabins, used on transatlantic routes to cities on the US East Coast and in the Midwest.

Airbus A320 and A320neo

Single-class aircraft for routes within Ireland, the UK and Europe.

Aer Lingus Regional

ATR 72-600 turboprops on shorter routes between Ireland and the UK, operated by Emerald Airlines.

On board

Aer Lingus cabin classes

Cabins depend on the aircraft and route. Check the seat map and fare conditions before you buy.

Business Class

On transatlantic flights, a separate cabin with lie-flat seats on the A330, A321LR and A321XLR.

Economy (transatlantic)

The standard cabin on North American routes, sold in fare types with different baggage, change and seat-selection conditions.

Economy (Europe)

A single economy cabin on European and UK flights, sold as Saver, Plus, Advantage and AerSpace fares with different carry-on, checked-bag, seat and flexibility options.

Before you fly

Practical information

Baggage Cabin bags, checked bags, missing luggage

Aer Lingus baggage allowances depend on the fare, cabin, route and AerClub status.

Carry-on

Every passenger can bring a small bag that fits under the seat in front. Whether a larger cabin bag is included depends on fare. Size and weight limits are shown in your booking and on aerlingus.com.

Checked baggage

Checked bags are included on some fares and not on others, especially on European Saver fares. Transatlantic and Business Class allowances differ from European ones. Allowances depend on fare and route.

Special items

Sports equipment, pets, oversized items and medical equipment follow separate rules. Check the official Aer Lingus baggage page before you fly.

Check-in and boarding Steps before departure

Online check-in on aerlingus.com or the Aer Lingus app opens 24 hours before departure for flights to and from the United States and Canada. For flights within Europe it opens 48 hours before departure, or 15 days before with Plus, Advantage and AerSpace fares. Follow the check-in and bag-drop deadlines shown in your booking.

1 Confirm
Confirm the operating airline, airport and terminal.
2 Documents
Review passport, visa and entry requirements for your destination, including US entry requirements if you will clear preclearance in Dublin or Shannon.
3 Check in
Check in online or in the app as soon as it opens.
4 Boarding pass
Download the mobile boarding pass or print it.
5 Arrive early
Allow time for bag drop, security and, on US-bound flights, US preclearance before boarding.

Lounges

Aer Lingus operates the Aer Lingus Lounge at Dublin Airport Terminal 2. Access depends on cabin, AerClub status and the itinerary. Check the location and opening hours before you travel.

Loyalty program

AerClub is the loyalty program of Aer Lingus. Members collect Avios on Aer Lingus flights and with program partners, and use them for award flights and other rewards. Program rules change, so check your account for the conditions that apply to your trip.

Flight status and customer service Official sources

For current operational information, use Aer Lingus' official services:

Aer Lingus website

aerlingus.com for booking, check-in, trip management and flight status

Aer Lingus app

Available for iOS and Android, with mobile boarding passes and flight notifications

Where you land

Aer Lingus airports

Aer Lingus operates a single hub in Dublin. Most flights on its network fly to or from Dublin, so check the departure airport on your ticket before you book a transfer.

Dublin Airport Hub

DUB · Dublin

Aer Lingus's hub and the base for most of its European and transatlantic flights. Aer Lingus checks in at Terminal 2, which also houses the US preclearance facility: passengers flying to the United States complete US immigration, customs and agriculture checks in Dublin and arrive in the US as domestic passengers.