oneworld alliance partner’s Cathay Pacific and American Airlines have expanded their codeshare agreement.

The expansion will see the airline add 11 new destinations to its network in the United States.

The news comes continues a run of good news for oneworld, which earlier revealed record revenue for 2011.

In the expanded agreement, Cathay Pacific’s “CX” code will be placed on selected American Airlines domestic flights between O’Hare International Airport in Chicago and nine US cities – Atlanta, Charlotte, Cleveland, Columbus, Detroit, Kansas City, Minneapolis-St Paul, Philadelphia and Pittsburgh.

The latest arrangement will also cover American Airlines services from Los Angeles to Phoenix and Salt Lake City.

Tickets for the new codeshare services are now open for sale for travel commencing 1 September 2011, when Cathay Pacific begins its new daily service between Hong Kong and Chicago.

Cathay Pacific chief executive, John Slosar, said: “This is another milestone for Cathay Pacific and our long-term partner American Airlines.

“Both airlines show great commitment to our customers and this latest arrangement will provide more choice and greater convenience for Cathay Pacific passengers travelling between Hong Kong and the US.”