Reciprocal Upgrades Now In Effect Between American Airlines and Alaska Airlines
The aforementioned upgrades are in addition to such reciprocal benefits as priority check-in, priority security, and priority boarding — as well as increased allowances for baggage and access to airport lounges while traveling on international itineraries.
Executive Platinum and Concierge Key: At the time of booking the ticket
Platinum Pro and Platinum: At time of booking the ticket if the fare is Y, B, H, K, M, L, V, S or N — or within 72 hours of travel with less expensive fare classes
Gold: At time of booking the ticket on full Y, B, or H fares — or within 48 hours of travel with less expensive fare classes
Executive Platinum elite members who did not book a ticket with a Saver — or basic economy — fare may be upgraded within 120 hours of departure; and although this benefit is currently available only for members who have earned elite status, the benefit will eventually be extended to companions who are booked on the same reservation as well.
AAdvantage Executive Platinum members will be the next priority on the upgrade list for the benefit after Mileage Plan MVP Gold 75K elite members; and priority will then be based on such factors as fare class and time of request.
MVP Gold and MVP Gold 75K: At the time of booking the ticket
MVP: Within 24 hours of travel
Interestingly, members of the Alaska Airlines Mileage Plan program who have earned elite status and get upgraded aboard airplanes which are operated by Alaska Airlines do not need to be concerned about the fare class in which they booked their tickets — unlike members of the American Airlines AAdvantage who have earned elite status and want to be upgraded aboard airplanes which are operated by Alaska Airlines.
Additionally, Executive Platinum elite members are eligible for upgrades on Alaska Airlines — but MVP Gold and MVP Gold 75K elite members can only currently upgrade on domestic flights and flights to Canada, Mexico, Caribbean, and Central America on American Airlines. This is likely because Alaska Airlines does not have the international network which American Airlines has — plus, these particular upgrades are only available at check-in on the day of departure. MVP Gold 75K elite members may upgrade a companion on the same reservation.