I send my condolences to your wife, your step-children & you.

If the funeral is a day or two off try to all get there so you can say your goodbyes & be with all the rest of the family. Most airlines have very generous bereavement or family emergency rates. You might not have been able to get much discount yesterday simply because most of the planes were already booked solid with people going home from Thanksgiving. Today or tomorrow they might be able to come through with a much better fare.