No, but you could book one ticket through AS and the other through DL.
If both programs offer one-way awards (at a sensible rate) you could book outbound from one program, and the return through the other. However, I do not think that Delta offers one-way awards.
thank you. I'm new to all this miles/points business. But I have accumulated points and miles across a few different programs and trying to figure out the best way to maximize everything. This stuff is fun and addicting
