About a year ago I went to brazil through delta and i was bumped on my connection and after much complaining to high authority.. i recieved four, one class upgrades.

Upon arriving home i forgot all about them. It was only this morning when I found them burried in a pile of papers, the only problem is, they expired six months ago.

I was planning on traveling to Israel this summer with my family and I wanted to go business class, do you think delta will honor these expired vouchers? or at least give me any sort of mileage?

Thanks,
Mike