Taking a closer look at the AA benefits on AS page, the premium class upgrade description has changed too and is much more descriptive now:
Originally Posted by https://www.aa.com/i18n/aadvantage-program/aadvantage-status/aadvantage-status-benefits-on-alaska-airlines.jsp
Immediate access to Premium Class seats
You’ll have immediate access to Premium Class seats a few minutes after your ticket for an eligible fare is issued, and if space is available.
If you book your trip on alaskaair.com, find fares that are eligible for immediate access to Premium Class using the “Upgrade fare type” filter on their website. Here’s how:
- AAdvantage Gold® members – choose “MVP”
- AAdvantage Platinum® – choose “MVP Gold”
- AAdvantage Executive Platinum® / AAdvantage Platinum Pro® – choose “MVP Gold 75k”
Whether you book your trip on alaskaair.com or another booking source and visit Alaska’s website later, you can reserve a complimentary Premium Class seat. Here’s how:
- Choose a seat in the Main Cabin.
- Buy your ticket for a seat in the Main Cabin.
- After your trip is ticketed, you’ll be assigned a seat in Premium Class if you booked an eligible fare or once your AAdvantage® status window opens.
Keep in mind:
- Seats marked as “Alaska Elite” are available complimentary to AAdvantage® status members.
- The seat type you choose in the Main Cabin – aisle or window – will be your seat type in Premium Class.
- If you choose a seat in an exit row, you won’t be moved to Premium Class.
- Choosing a Premium Class seat before ticketing will result in a charge. To receive a complimentary Premium Class seat, you’ll first need to choose a seat in Main Cabin and pay for your ticket.
- You can view your assigned seat in Premium Class on alaskaair.com using your Alaska Airlines confirmation code.
Find your Alaska Airlines confirmation code (also known as a record locator) on your booking confirmation email. If you booked your trip through American, you’ll find it when viewing your trip on aa.com or the American app.