Code shares are between airlines that generally operate in different markets. Delta code sharing with Air France may limit direct competition on the few intern

Code shares are between airlines that generally operate in different markets. Delta code sharing with Air France may limit direct competition on the few international routes they share, but in general it is also good for passengers because Delta cannot operate flights wholly within Europe and Air France cannot operate domestic US flights. Code sharing allows a passenger to buy one itinerary complete with rescheduling for missed connections and correctly handled baggage.