American Airlines and Iberia have further expanded their codeshare agreement, enhancing connectivity across Europe. Starting in July 2025, Iberia will carry American Airlines‘ flight codes on four additional routes from Madrid Barajas Airport (MAD) to European cities, strengthening the partnership between the two airlines, both part of the Atlantic Joint Business Agreement (AJBA). This agreement also includes other oneworld members and International Airlines Group (IAG) subsidiaries, such as British Airways.
New Codeshare Destinations
The four new European destinations that Iberia will serve under American Airlines’ code are:
- Athens Airport (ATH)
- Budapest Ferenc Liszt International Airport (BUD)
- Hamburg Airport (HAM)
- Paris Charles De Gaulle Airport (CDG)
These additions will allow American Airlines passengers to connect to a wider network of European cities. However, American Airlines will not operate direct flights to Budapest and Hamburg, with services already established to Paris and Athens from various U.S. hubs.
In July, American Airlines will operate flights from:
- Charlotte Douglas International Airport (CLT)
- Chicago O’Hare International Airport (ORD)
- Dallas/Fort Worth International Airport (DFW)
- New York John F. Kennedy International Airport (JFK)
- Philadelphia International Airport (PHL)
American Airlines also services Athens from Charlotte, Chicago, New York-JFK, and Philadelphia, including seasonal changes for its Philadelphia to Athens service, which began in late March 2025, earlier than in previous years.
Extensive Codeshare Network
By July 2025, the expanded codeshare agreement between American Airlines and Iberia will cover 65 destinations, offering a vast network across Europe, North America, Africa, and the Middle East. Notable European airports where American Airlines passengers can connect to Iberia flights include:
- Berlin Brandenburg Airport (BER)
- Dublin Airport (DUB)
- Frankfurt Airport (FRA)
- Lisbon Airport (LIS)
- Milan Malpensa Airport (MXP)
- Rome Leonardo da Vinci Fiumicino Airport (FCO)
Additionally, American Airlines will offer flights to cities like Boston Logan International Airport (BOS), San Francisco International Airport (SFO), San Juan Luis Munoz Marin International Airport (SJU), and Washington Dulles International Airport (IAD), further enhancing the network.
Scrutiny of the AJBA
The AJBA, which includes American Airlines, Iberia, British Airways, Aer Lingus, and Finnair, has faced scrutiny from the United Kingdom’s Competition and Markets Authority (CMA). In 2018, the CMA launched an investigation into the joint venture’s impact on competition. The authority raised concerns about barriers to entry on certain U.S.-UK routes due to slot constraints at London Heathrow and Gatwick airports.
In March 2025, the CMA published a notice accepting commitments from American Airlines and British Airways to offer more slots on key U.S.-UK routes, including services between London and Boston, Chicago, Dallas/Fort Worth, and Miami. This would address concerns over reduced service options and help ensure competitive pricing for consumers. Additionally, the airlines agreed to maintain a minimum number of local passengers on certain routes to prevent service reductions.
These commitments and adjustments are designed to address competitive concerns while ensuring American Airlines and Iberia’s codeshare agreement continues to provide expanded options for travelers.
