It means a flight in which two air carriers or more jointly operate. 'Operating carrier' is the airline whic operates a commercial and 'Marketing carriers’ are the ones which sell their seats with their own flight names without operating a flight.
It means a flight in which two air carriers or more jointly operate. 'Operating carrier' is the airline whic operates a commercial and 'Marketing carriers’ are the ones which sell their seats with their own flight names without operating a flight.