Summary Codesharing involves ticketing airlines selling seats on flights operated by a separate partner airline. Codesharing is common among airlines to expand routes and profits. Disadvantages for passengers include difficulties in changing plans, confusion, and complications with spending loyalty points.

Airlines in today’s market rely heavily on agreements and partnerships to boost profits and provide the most extensive route networks for passengers. One common and important partnership is codesharing , which involves a ticketing airline selling seats on a flight operated by another airline. While codesharing provides various benefits for both airlines and passengers, it also has several disadvantages.

Some of the most notable drawbacks to codeshares are increased difficulty in changing travel plans, confusion for passengers, limitations on spending loyalty points, trouble in choosing seats, and discrepancies in the quality of travel between the two codeshare partner airlines. What is codesharing? Airlines often enter into agreements or alliances with one another to further individual airline goals and expand route options for passengers. There are several ways airlines partner with each other, including: Interlining Loyalty Program partnerships Joint ventures Alliances One of the more controversial and often troublesome airline partnerships is codesharing, as seen in recent events involving Delta Air Lines and JetBlue .

Codesharing is an agreement between two (or more) .