Japan Airlines (JAL) and British Airways (BA) will begin its joint business agreement of entering into a revenue-sharing pact on flights between Europe and Japan on 1 October.
Under the agreement, the two airlines will cooperate on all nonstop flights operated by JAL and BA between Japan and Europe, including JAL's services to Paris and Frankfurt.
This comes after the carriers received anti-trust immunity from Japan's ministry of land, infrastructure, transport and tourism in May.
Earlier this month, the carriers began codesharing on each others' 19 weekly flights between Tokyo Narita and London Heathrow.
BA currently codeshares on eight of JAL's routes, while JAL codeshares on 23 of BA's routes within Europe. From 1 October, JAL will put its code on four additional BA routes and starting 28 October, BA will put its code on nine JAL services to seven Japanese cities.
"Further expansion of codeshare arrangements are expected in the future," adds JAL.
"We are looking forward to creating more customer benefits with this deeper level of co-operation with our long-time partner, British Airways," says JAL's president Yoshiharu Ueki.
JAL has previously said that it expects the joint business to be launched by late March 2013.