All Nippon Airways Co. and Hokkaido International Airlines Co., better known as Air Do, launched code-sharing services Saturday on their Haneda-Sapporo route.

The agreement is the first time major domestic airlines have offered code-sharing services on a busy domestic route.

The code-sharing services cover six round-trip daily flights by Air Do. ANA purchases half the seats for sale under its brand.

Passengers on code-sharing flights will pay different fares, with ANA's ticket selling for 25,200 yen and Air Do's for 20,700 yen.

Code-sharing is the main pillar of a rehabilitation program introduced by Air Do. The airline has been undergoing court-mandated restructuring under the terms of the civil rehabilitation law.