Originally Posted by alexcr

Here's a quick summary of my situation and question...

• I have a Delta SkyMiles Platinum American Express Card. I'm traveling with my mom in a month, and am "purchasing" her flight using my annual Companion Certificate.

• My mom has an American Express Platinum Card. More specifically, she has an authorized user card; my dad has the main card.

• I believe it's still the case that my mom's American Express Platinum Card – that is, her authorized user card – gets her access to the Delta Sky Club, and she can then pay an additional $50 for me to join her as a guest. Right?

• However, does the fact that she's flying with a Companion Certificate have any impact on her ability to do this? For example, I believe if you're flying with a Basic Economy ticket, you're unable to access the Delta Sky Club, regardless of what credit card you have. Are there any similar limitations if your ticket was "purchased" using a Companion Certificate?

Thanks in advance for any guidance!