noun
code-share flight
A flight operated jointly by two or more airlines under their own flight numbers, typically through a code-sharing agreement.
この共同運航便は、A航空とB航空が共同で運航しています。
This code-share flight is operated jointly by Airline A and Airline B.
Synonymous loanword from English 'code-share flight'; 共同運航便 is the native Japanese term.
Compound of 共同 (joint, shared), 運航 (flight operation), and 便 (flight/service).