All Nippon Airways Co. has concluded agreements with United Airlines and Lufthansa German Airlines to start code-sharing operations in October and July, respectively, ANA officials said Tuesday.

ANA will offer joint operations with UA on 11 routes between Japan and the United States beginning Oct. 25 as part of their comprehensive marketing alliance, the officials said.

Its code-sharing operations with Lufthansa will cover eight weekly flights between Tokyo and Frankfurt beginning July 1. "The alliance is a strategy to ensure our survival. We judged that the alliance would be essential to (ANA's) survival in the international market toward the 21st century," Isao Yagi, ANA's senior vice president, told a news conference.