The operating carrier flies the aircraft
Its crew, aircraft and operating certificate govern the physical flight. The marketing carrier places its own code on that service for sales purposes.
Codeshares expand network visibility
An airline can list partner destinations in its timetable and website. That makes one-stop itineraries easier to sell under a familiar brand.
Through-ticketing can simplify connections
Baggage and ticketing can often be handled across both carriers under one itinerary. The exact process depends on the commercial and interline agreements behind the booking.
Passenger benefits may depend on which carrier sold the ticket
Seat selection, upgrades, lounge access and frequent-flyer earning can follow different rules on codeshare flights. Travelers should check both the operating and marketing carrier terms.
Airlines gain feed without duplicating routes
A long-haul airline can rely on a regional partner to distribute passengers beyond a gateway. The partner gains access to incoming traffic in return.
Several flight numbers do not mean several flights
Airport boards may display multiple codes for the same departure. The operating carrier and departure time are the clearest identifiers of the actual flight.
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