I need to find the least cost way to get from Miami to Ancorage AK for 3 people.

This is an emergency case, my mother is dying and I need to get there in late June when the rest of the family will be there.

Because of the distance, I would prefer 1st or business class.

I have 14 first class upgrades on American but I have lost both my Platinum and Gold status. I have 39,000 available miles.

I have not travel for 4 years so I do not know what to do can anyone help ?