Kyodo News International has reported that All Nippon Airways (ANA) and US Airways have concluded a comprehensive business tie-up agreement.

The agreement marks the start of joint studies by ANA and US Airways to begin code-sharing flights involving ANA’s U.S. routes and US Airways’ services to New York, Washington, Mexico and other destinations.

The partners will also consider a joint frequent flyer service program.

US Airways, the fifth largest U.S. airline in terms of passenger numbers, will become the 16th member of the Star Alliance network of international airlines, which includes ANA, this spring.