DUBLIN, FORT WORTH- Ireland-based Aer Lingus (EI) has unveiled an extended expansion of its codeshare partnership with Major US Carrier American Airlines (AA), enabling travelers to book additional transatlantic flights through both airlines’ official websites.
This expanded agreement allows customers to reserve flights with either Aer Lingus or American Airlines for routes connecting Dublin to Philadelphia (PHL) and Dublin to Chicago (ORD). This enhancement offers travelers greater options and improved flexibility when traveling between Europe and transatlantic destinations.

American Airlines and Aer Lingus Codeshare
The existing codeshare arrangement between the two carriers, which was initiated last year, currently permits Aer Lingus customers to book direct flights from Dublin (DUB) to Charlotte (CLT) and Dallas-Fort Worth (DFW).
Today’s announcement represents a significant milestone in Aer Lingus’ collaboration with American Airlines and its participation in the broader Atlantic Joint Business (AJB) partnership, which includes American Airlines, British Airways, Iberia, and Finnair.
Aer Lingus passengers now have the option to book codeshare connections with American Airlines to a variety of destinations, including Albuquerque, New Mexico (ABQ), Nashville, Tennessee (BNA), Dallas-Fort Worth (DFW), Las Vegas (LAS), Kansas City (MCI), Portland, Oregon (PDX), San Jose, California (SJC), Tampa, Florida (TPA), and Tucson, Arizona (TUS).
Aer Lingus became part of the Atlantic Joint Business in 2020, and this integrated collaboration has delivered substantial benefits to millions of travelers.
These benefits include reduced fares, increased access to destinations, and more synchronized schedules and flight frequencies. This initiative has been serving passengers effectively since its launch in 2010.
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