A codeshare is an airline agreement where one or more codeshare partners operate some routes.
For example, you could book a Qantas ticket between Sydney & London (via Dubai), but Emirates may operate the flight (or one of the flights).
Seating, baggage and service can vary between codeshare partners, and in some instances, services like pre-seating, meal selections, and online check-in may not be available on the flight operated by the codeshare partner.
We will let you know (and ask you to confirm that you're aware) of any codeshare flights when making your booking.