Lets say I am looking for flights to ATW from TLH (so TLH-ATW) for Sept 20-Sept 22. I find a flight on DL and it costs $754 and some change. Well, I look on NW's website and they have a roundtrip operated completely by DL for $454 and some change. The question: If I book on NW, because it is a Skyteam partner, can I use skymiles to pay my fare? Any help appreciated.