Delta SkyMiles might not appear to be the most valuable currency out-there, however with a little digging around you’ll find out that Delta low-level domestic 25K mileage awards do exist.
Here’s some low-level awards I was able to find with decent availability.
Los Angeles- Las Vegas: 25,000 SkyMiles
Ft. Lauderdale- Atlanta: 25,000 SkyMiles
Los Angeles- Cincinnati: 25,000 SkyMiles
Anchorage-Minneapolis: 25,000 SkyMiles
New York (JFK)- Los Angeles: 25,000 SkyMiles
San Francisco- New York (JFK): 25,000 SkyMiles
Yes, some of these routes are meant to be a joke in this post like Los Angeles- Las Vegas, and Ft. Lauderdale-Atlanta, however many of these other ones have a lot of availability as well. For instance, there was plenty of low-level availability from Anchorage to Minneapolis.
Delta’a popular transcon routes between New York-Los Angeles and New York-San Francisco also had a bunch of dates for low level awards.
If you’re flexible with your travel dates, and if you’re willing to do a little searching, you should be able to find low level domestic awards as well.