I'll be making an intercontinental flight with ST (specifically AZ) next month, and I'm wondering where to credit it. I only rarely fly with ST, and I currently don't have status nor accrued miles with any of their programs.
I'd probably spend the miles on US domestic flights (i.e. with DL). I checked: both DL and FB want 12,500 miles ow, whereas AZ is asking for 20.000.
I understand that with DL, miles do not expire, so that would make it the best choice for a very occasional ST flyer?
Any thoughts?