Alaska Airlines will become the second U.S. airline in the global oneworld alliance, along with American Airlines, effective March 31. But it turns out Alaska Airlines miles will not be redeemable on oneworld airlines that haven’t already been partners in the Mileage Plan program at that time. Instead mileage redemption on new partners in oneworld will have to wait until summer.
In other words Alaska Airlines has rushed the work to join oneworld, and will actually join before it’s done. This means customers will be able to earn miles on new airlines, crediting to their Mileage Plan account – and more airlines will award airlines for travel on Alaska – but customers don’t gain access to spend those miles on more airlines for a few more months.