Airport taxi in US dollars

We both have it and love the companion fare. But we never use it for a cash from an ATM. The fee of a cash advance is $10 or 5% of the amount whichever is greater. Interest starts accruing from day one and applies to the entire balance.
Here’s a blurb from a credit card review site.

You can get an Alaska Airlines Credit Card cash advance from any ATM. A cash advance PIN will be required, and you can obtain it by calling customer service at 800-432-1000. You can also request a cash advance in-person at a local Bank of America branch.
An Alaska Airlines Credit Card is a very expensive transaction though. There’s a 5% cash advance fee with a $10 minimum charge on all transactions. If you do a cash advance from a non-Bank of America ATM, you may face an additional ATM charge.
Also, cash advances are subject to interest charges at the cash advance APR. The interest compounds daily, which means interest charges apply every day on top of both the previous days’ interest and the principal balance.
With this said, it's best to only use your credit card for cash advances in emergency situations

If you’re getting cash this way, you may want to get a debit card from your bank.