One of the frustrations people have with Delta Skymiles (other than the fact that they are impossible to redeem) is that you can only book roundtrip tickets with them.
However, that does not mean there is no way to book a 1-way ticket on Delta using miles. Au contraire, mon frere.
If you use Air France/KLM Flying Blue miles, you can book a domestic 1-way ticket on Delta, with no ridiculous fuel surcharges. (CLARIFICATION: You can also book 1-way tickets on Delta for TransAtlantic travel using Flying Blue without fuel surcharges as well, as long as the entire itinerary is on Delta metal. Good luck finding a seat, but if they’re available, a coach 1-way TransAtlantic is 25,000 Flying Blue miles + $2.50. Pretty fantastic, considering that’s just 20,000 Starwood points.)
Below I walk through how I recently priced out an award ticket from LaGuardia to Detroit — the final price came to 12,500 Flying Blue miles plus $2.50. If low level awards are available on Delta.com, they’re also available on Flying Blue.
You can transfer Membership Rewards points into Flying Blue, or you can transfer Starwood points into the program (with the usual 5,000 mile bonus for transferring 20,000 miles). It’s a nice workaround for the Delta one-way restriction.