0 a system by which two or more airlines agree to offer a single ticket and to use the same flight number for connections to a place where only one of them goes: --
a code-sharing agreement/arrangement
Under code-sharing passengers can travel on two airlines with a single ticket.
Code-sharing enables an airline to market seats on a flight operated by the partner airline.
Although these airlines cooperated with one another through code-sharing and frequent flyer program coordination, no formal association was ever announced.
Restrictions on cargo aviation and third-party code-sharing have been lifted, as have restrictions on passenger aviation.
Via code-sharing arrangements with other companies, it offers flights to another 60 destinations in 25 countries.
In the jargon, one needs a code-sharing agreement.
They believe that there are benefits to be achieved by way of code-sharing and in areas such as marketing.