I don't even understand the point of code-share flight numbers. The first thing I do when I see one is look up the original flight number. Most flight search engines will also show you the original carrier.
Why not just get rid of them and book on the original flight number? Is it needed somehow in their systems to know how a flight was booked or what flights are eligible? Can that be fixed instead of the flight numbers?
Why not just get rid of them and book on the original flight number? Is it needed somehow in their systems to know how a flight was booked or what flights are eligible? Can that be fixed instead of the flight numbers?