I've been keeping an eye on AllegiantAir, a low-cost carrier for west coast USA, as it completes the hop from Australia to mainland USA.
Today AllegiantAir announced Tax Day Deals. In combination with Jetstar's Easter Sale, it's possible to fly return to Las Vegas, NV for about $1250, or Fresno, CA for about $1050.
The flights I looked at were for August.
I did this once when I went to Vancouver. Jetstar then westjet to Vancouver. It was cheaper for me to do that and spend 5 nights in Honolulu than to fly via mainland us. It was great!