One Mile at a Time notes that the partnership between Delta and Singapore Airlines will end May 15.

It’s been likely for awhile that this would go away. It dates back to Singpaore taking a 5% stake in Delta in 1989, divested ten years later. But the partnership continued for a decade past that. And in practice what it meant was the ability to redeem Delta miles on Singapore (and vice versa, but what Kris Flyer members would have wanted to?).

Singpaore Airlines awards were the one great redemption option available with Delta Skymiles. It was the only true first class redemption available, and a good one at that. A couple of years back Delta started collecting hefty fuel surcharges on the awards, but that didn’t bother me — the ability to use Skymiles for Singapore first class was much better than any alternative use of the miles. And for some reason I’ve never entirely understood, Delta seemed to have access to more inventory than other Singapore partners. While premium class award inventory for Star Alliance partners has pretty much dried up departing the US on Singapore, Delta has still been able to secure seats.

Folks still have five months to make this special use of their Delta miles. Act fast..